EAC Agenda 06/01/2011
EAC
REGULAR
MEETING
AGENDA
JUNE 1, 2011
AGENDA
COLLIER COUNTY ENVIRONMENTAL ADVISORY COUNCil-
WILL MEET AT 9:00 A.M., WEDNESDAY, JUNE 1, 2011, IN THE BOARD OF COUNTY
COMMISSIONERS MEETING ROOM, ADMINISTRATION BUILDING, COUNTY
GOVERNMENT CENTER, 3299 TAMIAMI TRAIL EAST, NAPLES, FLORIDA
I. Call to Order
II. Roll Call
III. Approval of Agenda
IV. Approval of May 4,2011 meeting minutes
V. Upcoming Environmental Advisory Council Absences
VI. land Use Petitions
A Hacienda Lakes Growth Management Plan Amendment
CP 2006-11
Hacienda Lakes Development of Regional Impact
DRI-2006-AR-10147
Hacienda Lakes Planned Unit Development Rezone
PUDZ-2006-AR-10146 f
Sections 11 through 14, 23 through 25, Township 50 Sop.th, Range 26 East, and
Sections 19 & 30, Township 50 South, Range 27 East, Collier County, Florida.
(Please give the binder for this petition back to the EAC Liaison as they packets will be
used for other hearings.)
VII. New Business - none
VIII. Old Business
A. Presentation of Collier County Draft Watershed Management Plan
B. Update members on projects
IX. Council Member Comments
X. Staff Comments
A Discussion of Digital packets
XI. Public Comments
XII. Adjournment
*******************************************************************
Council Members: Please notify Summer AraQue, Senior Environmental Specialist no later than
5:00 p.m. on May 26, 2011 if you cannot attend this meetina or if yOU have a conflict and will
abstain from votina on a petition (252-6290).
General Public: Any person who decides to appeal a decision of this Board will need a record of the
proceedings pertaining thereto; and therefore may need to ensure that a verbatim record of proceedings is
made, which record includes the testimony and evidence upon which the appeal is to be based.
Ann P. Jennejohn
Subject:
Attachments:
BrownAraqueSummer [SummerBrownAraque@colliergov.net]
Tuesday, May 24,2011 5:14 PM
Arnold, Kady; Ashton, Heidi; Bellows, Ray; Bonham, Gail; Bosi, Michael; Calvert, Eugene;
Campos, Kristin; Darco, Christopher; Delony, Jim; Deselem, Kay; Gibson, Laura; Gundlach,
Nancy; Hatcher, Mac; Hetzel, Lavah; Kraus, Maura; Kurtz, Gerald; Lenberger, Steve; Lorenz,
William; Lyberg, Amy; Marcella, Jeanne; Mason, Susan; McAlpin, Gary; McKenna, Jack;
Mitchell, Ian; Patricia L. Morgan; Preston, Steve; Puig, Judy; Sawyer, Michael; Smith, Ray;
Soter, Cheryl; Spangler, Tonia; Sulecki, Alexandra; Torre, John; Valera, Carolina; Watkins,
Rhonda; Weeks, David; Wiley, Robert; Wilkie, Kirsten; Williams, Steven; Bill Foley; Bob
Kransowski; Brad C; David Durrell; DHN; Don; Doug Fee; Eric Staats; Laura Layman; Minutes
and Records; Mike Kirby; Nancy Payton; Nicole Ryan; RKS (rks@jbglaw.net); SCHAPIN43
@aol.com
June 1,2011 EAC Meeting
6 - 2011 EACAgenda.pdf; Collier-County-Executive-Summary-R1.pdf; EAC_
6111StaffSummary.pdf; HaciendaEACstaffreport (2).pdf
From:
Sent:
To:
Attached is the agenda, staff report, and other materials for the June 1, 2011 EAC meeting. If you need further documents, please
contact me.
The Draft Watershed Management Plan can be found at the following website under "Watershed Management Plan Drafts:"
http://www.colliergov.net/lndex.aspx?page=2302 _,
Summer B. Araque
Senior Environmental Specialist/EAC Liaison
Collier County Government Growth Management Division
Land Development Services Department
Storm water and' Environmental Planning Section
2800 N Horseshoe Dr.
Naples, FL 341 04
Phone: 239-252-6290
My Desk Fax: 239-252-6719
"
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Under Florida Law. e-mail addresses are public records. if you do noft 'Hant your e-mail address released in response to a public records request. do not send
electronic mail to [his entity. Instead, contact this office by telephone or in wriiing,
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1
VI. A
ENVIRONMENTAL ADVISORY COUNCIL
STAFF REPORT
MEETING OF JUNE 1st, 2011
1. NAME OF PETITIONERfPROJECT:
Petition No: Development of Regional Impact - DRl-AR-10147
Planned Unit Development Rezone-PUDZ-AR-10146
Petition Name: Hacienda Lakes DRI/MPUD
ApplicantlDeveloper: Hacienda Lakes of Naples, LLC.
Engineering Consultant: RWA Consulting, Inc.
Environmental Consultant: Passarella and Associates, Inc.
II. LOCATION:
The subject property, consisting of 2,262:1:: acres, is located on the east side of Collier
Boulevard (C.R. 951) at the intersection of Collier Bouleyard and Rattlesnake-Hammock
Road and north and south of Sabal Palm Road in Sections 11 through 14, 23 through 25,
Township 50 South, Range 26 East, and Sections 19 & 30, Township 50 South, Range 27
East, Collier County, Florida.
III. DESCRIPTION OF SURROUNDING PROPERTIES:
ZONING
DESCRIPTION
N-
Agricultural (A)
undeveloped areas and mining operations
S-
Agricultural (A)
residential and agricultural uses along Morgan
Road, Beagle Lake Road , Brandy Lane and several
other roadways north of Sabal Palm Road, then
larger agricultural operations to the south of Sabal
Palm Road, with undeveloped tracts scattered
throughout the areas
EAC Meeting
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E - Agricultural (A)
undeveloped areas
w - pun, C-3, C-5, A, and
TTRVC, then CR 951
yarious commercial uses, including a
hospital, several churches, residential uses and
undeveloped areas
IV. PROJECT DESCRIPTION
There are three companion projects inyolved in the reyiew of the Hacienda Lakes project.
There is a DRI Application for Development Approval, a PUD rezoning and a GMP
amendment application. The deyeloper proposes development of a maximum of 1,760
residential dwelling units, 327,500 square feet of retail use, 70,000 square feet of
professional and medical office, a 135-room hotel, 140,000 square feet of business park
or educational facility, a 20:1: acre public school site, a public facilities use tract (one :l::
acre) and continuation of existing junior deputies passive recreation and existing swamp
buggy attraction. According to the application, the following charts represent the
development potential.
LAND USE SUMMARY
DESIGNATOR LAND USE ACREAGE
~ It'.. " COMMEt<CI.t..L " 34. 1 6:1: ACRES
v '!
.::cv. \/ERCIP..L LA~~jS E~JC'JM8ERED BY PUBLIC ROV'l TRA.CT H2.51z ACRES
,..... ,. .~ TTR.A.CTI 0 f'J 47.27:1: ACRES
1-'.
"h:" R E:::-)IDENTIAL 447.86:1: ACRES
.. t.; ) ,', -., ._ t, r: t.; S ,.....j ES :':; F)ARI< .;"""";n :;CHCOL 35.38:1: ACRES
'" .... ...;K
','
'Jr." r:; RES ERVE 1 544. 1 4:1: ACRES
r~ .
-,
"F:F" PLS.L1C FACILITY 1 .33:i: ACRES
., ,", H 'J UI\IOR J EP UTY 21.62:i: ACRES
",' =.; :
...... ~~:(; HOe)l 19.55:1: ACRES
'.
--'
"p /rjl.;" r ESIDEt',;TIAL/t}E01~=:p..L USE 38.82:i: ACRES
''f-~ >/i .. I . -'L1'" ~'~')Vv / EftSP./ E~~TS 72.01 :f: ACRES
1..1 -:: '....
TOTAL 2262.14 :!: ACRES
. , - "
~ THE L::)~;t:r'.Ei.' TC:TAL :.JF THE:.E T!~,-l "C',EA,('E::. EQ",ALS THE .A.CTIVITf CE~,TEP- AC~EA.GE (,;F .:6.<: I
H E:<U.:L'E THI::, .:;~;-~EA(;E WHP'4 TOTAUNG PRG.JECT A~EA, AS IT IS If\cl:\mE) Iii THE "ROW. TRACT
EAC Meeting
Page 3 of9
--
ESTIMATED DEVELOPMENT SCHEDULE
Stage One
Year Residential Sim:!le-Familv Multi-Familv Retail Office Business Park School
2012 50 Units 20 Units 30 Units 27.500 SF 0.0 SF 0.0 SF
?013 200 Units 100 Units 100 Units 150.000 SF 20.000 SF O.OSF
2014 200 Units 100 Units 100 Units 150.000 SF" 25.000 SF 40.000 SF
'. 2015 250 Units 100 Units 150 Units 0.0 SF 25.000 SF 0.0 SF
i 2016 250 Units 100 Units 150 Units 0.0 SF 0.0 SF 0.0 SF
950 Units 420 Units 530 Units 327,500 SF 70.000 SF 40.000 SF
ESTIMATED DEVELOPMENT SCHEDULE
StOQe Two
Year Residential Single.Familv Mulll-Familv Retail Office Business Park School
2015 25 Units o Units 25 Units 0.0 SF 0.0 SF 20.000 SF 919 Students
2016 25 Units o Units 25 Units 0.0 SF 0.0 SF 20.000 SF
2017 275 Units 100 Units 175 Units 0.0 SF 0.0 SF 20.000 SF
2018 275 Units 100 Units 175 Units 0.0 SF 0.0 SF 20.000 SF
2019 210 Units 84 Units '126 Units 0.0 SF 0.0 SF 20.000 SF
810 Units 284 Units 526 Units 0 0 100,000 SF 919 Students
Totals: 1760 Units 704 Units 1,056 Units 327,500 SF 70,000 SF 140,000 SF 919 Students
I
I 'The 135 Room hotel is proposed to be developed In Phase One, in 2014.
v. GROWTH MANAGEMENT PLAN CONSISTENCY:
Future Land Use Element (FLUEt .
The Comprehensive Planning staff has determined that no environmental concerns or
issues result from the review of this DRIIPUDZ for GMP consistency.
To this extent, staff has determined the Hacienda Lakes' DRI and PUDZ may be found
consistent with the Future Land Use Element and Conservation and Coastal Management
Element of the Collier County Growth Management Plan, as would be amended by
companion petition CP-2006-ll.
Conservation & Coastal Manae:ement Element:
This project is consistent with the objectives of policy 2.2.2 in that it attempts to mimic or
enhance the quality and quantity of water leaving the site by utilizing interconnected
retention and detention areas to provide water quality retention and peak flow attenuation
during storn1 events prior to discharging into a wetland preserve.
This project is consistent with policy 6.1.2 regarding the selection of preserves. The
project preserves the majority of the higher quality habitats on-site as well as maintains
preserve connectivity (both on and offsite preserves) throughout the majority of the
designated preserve area.
EAC Meeting
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As required by Policy 6.1.1 and 6.1.2, the preserve areas shall be placed under a
permanent conservation mechanism to prohibit further development.
As required by Policy 6.1.4, prohibited exotic vegetation will be removed from the site
and maintained in perpetuity.
The Environmental Impact Statement(EIS) required by Policy 6.1.8 has been prepared
and is supplied as part of the review packet for this submittal.
As required by Policy 6.2.1 and 6.2.2, wetlands have been verified by the SFWMD. The
most recent wetland lines were field verified on May 23,2003. An updated formal
wetland jurisdictional determination is being sought through a new Environmental
Resource Permit application (No.100126-5) for this project. No major changes to recent
(December 2009) flagged wetland lines are anticipated.
As required by Policy 6.2.8, wetland impacts to the current Florida Sports Park were
pelmitted by the SFWMD in 1986 under pennit No. 11-00348-P.
As required by Policy 7.1.3 and 7.1.4, a listed species survey was conducted in
accordance with Florida Fish and Wildlife Conservation Commission (FFWCC) and the
U.S. Fish and Wildlife Service (USFWS) guidelines on the property and is contained in
the EIS (pages 27-37)
VI. MAJOR ISSUES:
Stormwater
Hacienda Lakes proposes to utilize an interconnected lake system for wet detention
treatment of stormwater. The control elevation is proposed to be 10' NGVD based upon
observed wet season water level indicators, with all but one control structure discharging
to eastern wetlands. Regulated discharge is proposed through six discharge points using
spreader swales to reduce velocity and erosion within the receiYing wetlands. Discharge
rates follow the recommendation of the Belle Meade Stormwater Master Plan (0.06
cfs/acre) which is less than the CUlTent allowable discharge rate (0.15 cfs/acre) per
County ordinance 01-27. The application commits to providing compensatory storage for
fill placed in the identified floodplain, including future floodplain mapping changes. The
application also commits to the design and installation of culverts crossing under Sabal
Palm Road at several locations to reduce current sheetflow flow impediments caused by
the road.
EAC Meeting
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Environmental:
Site Description:
The total project site is 2262.14 acres, 1700.54 acres of which contain native vegetation
in accordance with the definition in the GMP and LDC. On site natiye vegetation
communities are described in the ElS (Table 1 Pages 3-5) and shown on the FLUCCS
map under Exhibit 2.
Wetlands:
The project site contains approximately 1,752.72 acres of SFWMD jurisdictional
wetlands and approximately 17.58 acres of other surface waters (ElS Exhibit 3). The site
plan is designed to preserve the higher quality wetlands on-site which generally lie
towards the eastern portion ofthe project site. The proposed project design will result in
approximately 440.02 acres of wetland impacts and approximately 9.65 acres of impact
to other surface waters. A wetland preserve map is included in the EIS as exhibit 12.
The proposed mitigation for wetland impacts is the enhancement and preservation of
1,282.66 acres of on-site wetlands. Exotic vegetation will be removed and supplemental
planting will be conducted in areas where exotic vegetation exceeds 50% aerial coverage.
The mitigation plan also includes the enhancement and preservation of approximately
260.39 acres of upland preserves and upland buffers.
Preservation Requh-ements:
The project site contains a total of approximately 1700.54 acres of native vegetation and
straddles both the URF (Urban Residential Fringe Sub-District) and the RFMU (Rural
Fringe Mixed-Use District) sending lands overlay. There are two different Collier
County preservation requirements for native vegetation that occur within the two
overlays.
A minimum of 25% of the project's native vegetation is to be retained within the URF.
The total project area that lies within the URF is approximately 625.07 acres of which
286.87 acres is considered native vegetation. Based on that preserve calculation, 71.71
acres of native vegetation would be required to be retained within the URF. However, the
actual amount to be preserved within the URF is 40.81 acres of native vegetation. As
per the proposed GMP amendment (companion item CP-2006-11), in order to obtain a
reduction in the URF preservation requirement, the applicant shan preserye two times the
URF deficit (URF deficit is 30.90 acres x's 2= 61.80 acres) in the more environmentally
sensitive RFMU sending lands.
For those portions of the project within the RFMU sending lands, the native vegetation
preseryation requirement is 90 % of the native vegetation, not to exceed 60% of the
project site. Since the companion GMP amendment allows for a portion of the native
EAC IVleeting
Page 6 of9
vegetation requirement to be shifted from the URF to the RFMU, the native vegetation
retention requirement for the portion of the project in the RFMU will be greater than
60%.
The total project area that lies within the RFMU is approximately 1637.07 acres of which
1413.67 acres is considered native yegetation. The native preservation requirement for
the RFMU lands is 848.20. acres. The native vegetation to be preserved within the
RFMU sending lands is 1352.57 acres which includes the URF deficit requirement of
61.80 acres. Approximately 95% of the native vegetation within the RFMU sending
lands will be preserved. A total of 1395.35 acres of vegetation will be preserved.
Connections to adjacent preserve areas are made to abutting state lands to the east and
south, (Picayune Strand State Forest), Willow Run Quarry to the north, and Winding
Cypress PUD preserve to the west as shown in the EIS (Exhibit 10). The majority of the
proposed preserve area maintains a contiguous connection. The proposed Benfield Road
right- 01'- way (ROW) 120 foot corridor as shown on the Hacienda Lakes master site plan
(ElS exhibit 9) bisects a small p0l1ion of the total preserve area. A small mammal
crossing is proposed in that general area in order to connect the lands that are part of the
current Junior Deputies existing Collier County conservation easement and the new
preserve tract of the DR!. The wildlife crossing will be a box culvert measuring three
feet high by six feet wide to discourage use by large mammals while accommodating the
passage of small and medium mammals as well as amphibians and reptiles between
preserve areas.
Listed Species:
Multiple listed species surveys have been conducted during the past several years on the
project site. In 2009, an updated listed species was conducted. The listed animal species'
observed on the project site include the American alligator, tricolored heron, little blue
heron, snowy egret, white ibis, roseate spoonbill, white ibis, wood stork, .red-cockaded
woodpecker, bald eagle, Big Cypress fox squirrel, and Florida black bear. Listed plant
species observed on-site include the wild pine airplant, giant airplant, butterfly orchid,
and the cowhom orchid. Additionally, signs of two listed species, the gopher tortoise and
the Florida panther, were also observed. An aerial showing listed species locations and a
listed species management plan is included in the EIS (Exhibit 13 and 27 respectively).
A brief synopsis for each of the listed species observed on the project site is included in
the EIS (pages 27-36). .1
Minimization of impacts to listed species on this project site is achieved primarily
through the preservation of the highest quality habitat that is located mainly to the east
and south abutting the Picayune Strand state forest. Additionally, the proposed
enhancement of those preserve areas through exotic vegetatioR eradication, prescribed
burning, and supplemental planting/restoration should maintain the integrity of those
habitats. Storm water management lakes abutting portions of the preserve areas provide
additional wildlife habitat as well. A Preserve Area Management Plan is provided in the
EIS (Exhibit 26).
EAC Meeting
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The applicant is currently coordinating with FWCC regarding further development of the
listed species management plan. An updated biological assessment for the project was
provided to the USFWS as part of the new U.S Army Corps of Engineers (USACE)
application (SAJ-2006-11158 (IP-MJD). The USFWS proyided a comment letter to the
USACE regarding the project dated November 2nd, 2010 as shown in the EIS (Exhibit
28). All required FWCC and USFWS permits for impacts to listed species shall be
obtained prior to any future development orders.
VII. RECOMMENDA TrONS:
Staff recommends approval of the Development of Regional Impact -' DRI-AR-l 0 147 and
Planned Unit Development Rezone-PUDZ-AR-10146 with the following conditions for
approval:
ENVIRONMENT AL
1. An updated listed species survey for the future development areas shall be submitted
prior to the next development order. .
STORMW ATER MANAGEMENT
1. Installation of the Sabal Palm culvert crossmgs will occur prior to the first
preliminary acceptance.
EAC Meeting
Page 8 of9
PREPAREJ;l;Bi L
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fA MCKENNA, P .E.
ENGINEERING REVIEW MANAGER
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DATE
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(~/7/7- ~/ ~
CHRIS D'ARCO
ENVIRON MENTAL SPECIALIST
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DATE
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KA Y D SELEM, AlCP, PRINCIPAL PLANNER
DEPARTMENT OF LAND DEVELOPMENT SERVICES
REVIEWED BY:
5/IJ7/( /
DATE
EAC Meeting
Page 9 of9
REVIEWED BY:
_~/]l xJ;
GERALD KURTZ
STORMW A TER AND ENVIRONMENTAL PLANNING
DEPARTMENT MANAGER
.' LLlAM D. LOR Z, Jr., . .
DIRECTOR OF ENGINEE G, ENVIRONMENTAL,
COr-.1PREHENSIVE PLANNING AND ZONING
bkAr4 A- {)rO
rl."\/I STEVE W1L~IAMS
rU'--ASSIST ANT COUNTY A ITORNEY
OFFICE OF THE COLLIER COUNTY ATTORNEY
APPROVED BY:
~~~
DEPUTY ADMINIS RA TOR-PLANNING AND REGULATION
GROWTH MANAGEMENT DIVISION
~(P/i I
05:11-2011
DATE
~,. 1 J ',.
J- r-J.u; 1
DATE
5-17-11
DATE
CO.mler County
m ~..AIIJI<.~"""'- . . . .. . _
Growth Management Division
Planning & Regulation
Memorandum
To:
Environmental Advisory Council
From:
Mac Hatcher, Senior Environmental Specialist
Date:
May 20, 2011
Subject:
Staff Summary - June 1, 2011 Watershed Management Plan Workshop
Obiective: The final draft Collier County Watershed Management Plan and Executive Summary are
attached. The summary and conclusions will be presented along with an implementation strategy. The
Regulatory section is not complete in this draft and will be updated. A companion summary of the
technical reports will be prepared.
General information and support documents for the Watershed Management Plans are available at our
web page. The Collier County Watershed Management Plan will be posted to the web page soon.
Considerations: Completion of the WMPs will support objective 2.1 of the Conservation and
Coastal Management Element of the County Growth Management Plan.
FISCAL IMPACT: The proposed implementation strategy is to utilize existing staff with minimal
consultant technical support to deyelop GMP revisions and LDC amendments that are incentive based.
Structural Projects may be implemented as stormwater funds or grants become available. The
implementation of the plans will be cost neutraL
GROWTH MANAGEMENT IMPACT: Completion of the WMPs will support objective 2.1 of the
Conservation and Coastal Management Element of the County Growth Management Plan.
,'."
-'
PREPARED BY: Mac Hatcher, Senior Environmental Specialist, Growth management Division
I Planning and Regulation :.
F.
Executive Summary
The Collier County Watershed Management Plan
(CCWMP) has been developed using an integrated
water resources approach to balance water needs
of both the human and natural system
environments in the County's watersheds and
estuaries. One of the key features of this approach
is that it takes advantage of opportunities for
restoring the natural ability of the landscape to
benefit the human environment and protect the
water quality, water quantity, and natural systems
in the County.
Directive
The CCWMP was prepared to address protection
of the County's estuarine and wetland systems,
consistent with Florida Statute (Subsection
163.3177(S)(d)). Applicable Elements of the
Collier County's Growth Management Plan (GMP)
addressed by the CCWMP include Conservation
and Coastal Management and Drainage. The
development ofWMPs is specifically called out
under Goal 2 of the Conservation and Coastal
Management Element, Protection of surface and
estuarine water resources.
Background and Purpose
Under pre-development conditions, surface
waters flowed through wetlands in Collier County
into the Rookexy Bay and Ten Thousand Island
estuaries. Extensive canal construction began in
south Florida in the 1940s and the Golden Gate
Canal network was constructed in the 1960s.
Drainage canals and urbanization altered regional
surface and groundwater flow patterns, lowered
groundwater levels, increased freshwater
discharges to estuaries, and drained wetlands.
Associated urbanization and coastal development
displaced native habitats, increased surface water
discharges, reduced aquifer recharge, and
increased pollutant loads to estuaries. As a result,
what was historically a regional watershed, has
become multiple, artificially created watersheds
and restoring regional function via a County-wide
watershed management approach is critical to
restoring historical functions that allow the
PAGE ES-l COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
County to manage the resources for both human.
and natural water needs.
This CCWMP presents an evaluation of these
issues with respect to pre-development
conditions, performance measures by which to
evaluate proposed management actions, and
recommendations for water management actions
that will improve the volume and timing of flows
to the estuaries, reduce pollutant loads, increase
groundwater recharge, and restore natural
systems, to the extent possible, in the County.
Recommendations were developed to:
. Restore historical water quantity and
estuarine discharges
. Improve water quality within th'e watersheds
and estuaries
. Address flood control and water supply issues
Study Area
The CCWMP was developed to address conditions
in both the watersheds and estuaries (Figure
ES-l). The study area includes: three high priority
watersheds: Cocohatchee-Corkscrew, Golden Gate,
and Rookery Bay. The eastern watersheds, Faka
Union, Okaloacochee / State Road (SR) 29, and
Fakahatchee watersheds, were evaluated as a
single unit due to the less intensive land
development and restoration activities currently
underway in these watersheds. The estuaries in
the study area are Wiggins Pass, Naples Bay,
Rookexy Bay, and the Ten Thousand Islands
estuaries.
Approach
Relevant data were compiled from numerous
sources, including agencies, Florida STORET data
base, literature, and other reports. Two primaxy
tools were used to model and compare pre-
development with cur~ent conditions in the study
area. The Natural Systems Model (NSM) was
originally developed by the South Florida Water
Management District CSFWMD 1989) to simulate
the pre-development conditions in the Everglades.
ATKINS
The NSM was revised for the Big Cypress
Basin model (SFWMD 2007) and used in
this study. Existing conditions were
modeled using the Collier County MIKE
SHE/MIKEll Existing Conditions Model
(ECM). The ECM is an integrated surface
and groundwater model
Differences between pre- and post-
development conditions were applied to
develop performance measures for
assessing watershed and estuary
conditions and providing a measure of
improvement, or "lift," anticipated as a
result of implementing proposed
management actions. Performance
measures were developed for surface
waters in natural systems, freshwater
discharges to estuaries, pollutant loads,
and groundwater availability.
A series of potential capital improvement
projects was identified, screened, and
ranked to develop a list of recommended
proj ects for addressing water resource
issues in the County. Rankings are based
on the anticipated improvements, or "lift,"
in the system due to proposed projects. A
benefit/cost analysis was also completed,
for which benefit=lift and
cost=construction cost Priority project
are recommended and described for each
watershed. Non-structural (policy) actions were
also evaluated to support water management objectives.
Legend
D WI~ SHE Domain
c=J County Boundary
,.---,
o 2 . Miles
60
50
-;;;-
1 40
v
.:
~o ""
~ 20 I
~ I
10 L-
,-
I-
i'
o ,-
Pr.:drJit::tl~n
i
~
~
---
m___......_.
Irrirdb(!n
E',;'tlP~)
lfM~rjr;Jl(\1\
_ Inflows
Executive Summary
Figure ES-l. Collier County
Watersheds and Estuaries
---~--
-
RUMff
BO$dl.,,;:~, to
P.:,.......r
P'_OI'I['I">1; St.'r3:t~ Ch"",~~
Figure ES-2. Surface Water Budget for Collier County
PAGE ES-2 COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
L ,;.
~. ;
ATKINS
Results: Element 1, Existing Conditions -
Watersheds
The canals have increased the freshwater
discharges to the Naples Bay estuary by as much
as 10 times compared with pre-development
conditions and altered the timing and volume of
flows to the other estuaries. Development and
altered surface water flows have led to a dramatic
decline in natural wetland systems in the County,
including nearly 70 percent of the wetlands in the
Golden Gate - Naples Bay watershed.
Watershed surface water quantity. Stormwater
runoff volumes are strongly influenced by
precipitation, therefore, small changes in rainfall
can result in large runoff changes. Base flow
contributions increase with canal density,
therefore managing canal stages in response to
groundwater levels can help manage freshwater
discharges to estuaries. No net loss or gain in
watershed storage was documented for the
simulation period examined. Annual storage
losses in the dry season correspond with high
base flow contributions and withdrawals from
the surficial and lower Tamiami aquifers for
potable and irrigation water supply.
Lowering the water surface in the canal network
prior to large storm events can provide storage
in the canal network and mitigate flood risks.
Base flow and runoff in the Naples-Golden Gate
watershed is larger when compared with the
others.
Instream water quality. Water quality in
Collier County watersheds was evaluated with
respect to Total Maximum Daily Load (TMDL)
conditions per the Florida Department of
Environmental Protection (FDEP) verified list of
impaired waters. Multiple impairments were
documented. Each of the 6 watersheds have
identified dissolved oxygen impairments,
possibly due to anthropogenic pollutant loads,
surface water runoff from forested wetland
landscapes, and groundwater contributions.
Two watersheds had fecal coliform impairments
and 1 was impaired for nutrients.
Watershed pollutant loads. Areas with larger
pollutant loads corresponded to areas without
PAGE ES-2
COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
Executive Summary
Best Management Practices (BMPs). Nutrient
loads were higher in older urban and agricultural
areas and may be due to fertilizer applications.
Higher biological oxygen demand and metals
loads corresponded with low/medium residential
areas and urban areas, respectively.
Watershed hydrogeology (groundwater
budget). The groundwater system in Collier
County is a regional reservoir and varies in
response to seasonal changes. Current wet season
recharge in each aquifer corresponds to the
current dry se-ason withdrawals in the 4 aquifers
examined (water table,lower Tamiami, sandstone,
and mid-Hawthorne aquifers). The pattern of
drawdown was similar among the water table,
lower Tamiami, and sandstone aquifers (Figure
ES-3). The mid-Hawthorne is relatively isolated
from these three and exhibits a somewhat
different pattern due to limited withdrawals.
Leg.nd
CllhI.~D"'Mz>r. WUtr'h.bl.,Aqulfer
-1ol!ii2l"t;.1oU Elwatln"DiffRff!n'.(II)"
~...SUPPl'fW.aIS __"'~
. W.l!f'J'!.u..An.d" f{r]]~-l!
o :.tI~;'Itl,-",_,~",pr-:t.7
. ~1J"-U:J:'lt""Jb ~!S.r,
. !\,l,1.tl_unf..-ooj"l _.-~
.'-.
.'-,
-.,
Figure ES-3. Water Table Aquifer Average Annual
Groundwater Fluctuation
H__' ATKI NS
Structural operations changes in the Golden Gate
Canal may provide opportunities to reduce
groundwater losses and increase water
availability. Reducing groundwater withdrawals
for agricultural irrigation will increase the water
available for potable supply and habitat
protection.
Water uses. Changes in groundwater levels due
to withdrawals were examined with respect to
minimum aquifer levels established by the
SFWMD. Predicted declines were more than 5 feet
in many areas of the County and in all 4 of the
aquifers under a scenario of a 10
percent increase in groundwater
withdrawals (Figure ES-4). Predicted
impacts were greater under prolonged
dry season conditions.
Groundwater quality and pollutant
loads. Dissolved oxygen concentrations
in groundwater are less than 1.5 mgjL
in most of the county and are likely a
source of the dissolved oxygen
impairments in the canals. Total
nitrogen in most of the county and
phosphorus concentrations in the north
county and coastal areas exceed
corresponding surface water criteria
and may be a source of the nutrient
impairment to Rookery Bay. Iron, but
not copper, in surface waters, may be
attributable to groundwater sources. No
correlation was found between septic
tank density and nutrient
concentrations in the watersheds.
.1.ltOl,jOnd
1 wo.... S"P!'Iv w.
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Natural systems. A landscape-level
functional assessment method (modified f';;;%;l".'
. !fP'-l C:~,~~.
from Florida's Unified Mitigation
Assessment Method) was used to assess,
and assign value to, existing natural
systems conditions in the watersheds in
Collier County. In general, the combined
Faka Union, Okaloacoocheej SR29, and
Fakahatchee watersheds exhibited the highest
functional value (the least change from pre-
development) when compared with the other
watersheds. Measured functional value was less in
the Rookery Bay and Cocohatchee-Corkscrew
PAGE ES-3 COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
iSlwl ~'~. 1 t.
.. 'Nt.. t4
,_.q
j
i 0
,
Executive Summary
watersheds, and least in the Golden Gate-Naples
watershed. Landscape suitability index (LSI) ,
vegetation, and hydro!ogy scores provide
performance measures for evaluating potential
improvement projects and are mapped in Figures
ES-S and ES-6. Hydrologic restoration may
provide the greatest opportunity for measurable
improvements. Ecologically valuable lands were
also evaluated for potential comparisons with
SFWMD's or the County's proposed or existing
conservation and supportive agricultural lands
programs.
'1
i
,
l
4
8"""M
Figure ES-4. Water Table Aquifer (Prolonged Dry Season)
Drawdown with 10 percent Increase in Withdrawals
^TKINS
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Results: Element 2, Existing Conditions -
Estuaries
Volume and timing of freshwater flows. Excess wet
season runoff under existing conditions (ECM),
compared with pre-development (NSM) conditions is the
primary issue in the Wiggins Pass, Naples Bay, and Ten
Thousand Islands estuaries (Figure ES-7). For the
Rookery Bay Estuary, the primary issue appears to be the
timing of flow to the estuary and is due to excess water
during the wet season and too little water during the dry
season (Figure ES-8). Salinity model results (green bars)
are consistent with differences measured by comparing
pre- and post- development conditions.
Wet Season Comparison
25.0
20.0
:15.0
,I -s "10.0 --="_
j..E
---h-----a
~~
5.0
0.0
-5.0
\\'iggino; Pas!>
E~tuary
tlaples Bay
Estllar\,
Rooker., 8a\l' T ~J1 nlousand
E:ootuary lsl.mdo; Estuarv
. ECt;lvs. usr....1 . Salinity Anal'/sis
..___.--.i
Figure ES-7. Wet season runoff (inches) in Collier County estuaries
Dry Season Comparison
2~.0 f--n--- ---- ------ ----------.--------------.---
20.0 -I
:15.0 i
. ,
~ 10.0 1
5.0 .,-
!
0.0"; -.....
I
-.5.0 ..';
II
!
-'-~i
'N'g!lns PeW.
Estuart
N;apl~ Bay
Estuart
RookerY' Bav Ten Thou'iand
EsnlitlJ" 1..lands Estuary
. Ecr...1 VS. "'Sf..1 . SallnltyAnalvsl-;
Figure ES-8. Dry season runoff (inches) in Collier County estuaries
PAGE ES-5 COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
Executive Summary
Water quality of discharge. Collier County
estuaries are typically impaired (with respect
to state water quaiity criteria) for dissolved
oxygen and fecal coliform bacteria. Rookery
Bay is also impaired for nutrients.
Concentrations of dissolved oxygen and fecal
coliform bacteria in the discharges to the
estuaries also exceed water quality criteria.
Consequently, the watershed conditions are
likely impacting the receiving estuaries.
While causes oflow dissolved oxygen are
often attributed to nutrients, groundwater
influence, and water color, the causes in
these estuaries are not clear and would
require further study. Fecal coliform bacteria
may not be an appropriate indicator for
pathogenic diseases in the sub-tropical
climate and further source identification
efforts are warranted.
Other parameters of impairment concern are
iron and copper. Iron appears to result from
the groundwater discharges throughout the
canal network, al.though other sources are
possible. High copper concentrations may be
the result of anthropogenic impacts such as
the use of copper sulfa~e as an algaecide to
prevent algae growth in ponds or leaching
from boardwalks and pilings th_at are
constructed from. pressure-treated lumber.
Quality of receiving waters. Water quality
impairments idel1tified as part of the Florida
Department of Environmental Protection
(FDEP) total maximum daily load (TMDL)
program were cO,nfirmed with a single
exception: the Rookery Bay impairment for
chlorophyll-a was not confirmed and should
be addressed with FDEP. The Wiggins Bay,
Naples Bay, and Rookery Bay estuaries were
found to be impaired for dissolved oxygen
and fecal coliforms. Wiggins Bay was also .
found to be impaired for iron, and Naples Bay
was found to be i~paired for iron and
copper. The Ten thousand Islands estuary is
not listed as, and ~as not found to be,
impaired for any water quality parameter.
Collier County sh'Ould consider working with
the Florida Department of Environmental
Protection (FDEP) to determine the sources
..
ATKINS
.1
Phi-Development Habitat
\Vi~~~-:P~5
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Executive Summary
Existing nabitat
Wig'giIt~:J?'lSS_'_""--r----_
\\ ..... "
\....;......\.'~.;
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L_-\-- -----
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Legend ~4UlU
M,~n:.m\IA
Figure ES-9. Wiggins Pass Habitat
Pr~-"n;;,-..lOllmenf Hahitar
NJ\les Hay\
\ L,
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V
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III
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, ":". ,:,.' "'.
IJ!g.nd~.";,, \ ..I" i' '0''. ;', r
· ~:~~" \..... ! ,;;,)iii.,"}) l'IJ-!!
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':....: '..,.... .....' ,...,.-~
~ MOL"11~...a
. liJ..! N~sh
p Syb-Ossn Ek.urcd~
: Co:.n~ EClck."Y l
Figure ES-10. Naples Bay Habitat
PAGE ES-6 COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
^TKINS
Executive Summary
'. '
~~"i-,
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f 1_.
Figure ES-l1. Rookery Bay Habitat
Pre.De'-el pl~lem M:mgro\'e
Ten Thollsan Islands
E,,-isling Mang[o~e J
T=~_d[_' ,
, ":!.,~~
~~ . . ~~":~~~ /
;' " .' :,. :,::''''.~'''~ -t,i -.-.---.\., ~:;I:#1S.;~ I
r ".\"'~>\."--. ,i..:~
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'~~, _.,~ Co:nty (C\J!"~i j'
~;.- .'.
_. .-
-''--';J
Figure ES-12. Ten Thousand Islands Mangrove
PAGE ES-7
COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
ATKINS
for the identified impairments in Wiggins, Naples,
and Rookery Bay estuaries.
Coastal habitats. The reduction in areal extents
of oyster bars, seagrass beds, mangrove forests
and salt marshes in the estuaries is attributable to
direct physical loss associated with coastal
development. Habitat loss in Wiggins Pass and
Naples Bay estuaries (Figures ES-l0 and ES-11) is
substantially greater when compared with the Ten
Thousand Islands and Rookery Bay estuaries
(Figures E-12 and E13), due to greater
urbanization in Wiggins Pass and Naples Bay
estuaries. In the Wiggins Pass estuary, the
combined acreage of salt marsh and mangroves
has declined by 29 percent over pre-development
conditions. Acres of salt marsh and mangrove
have declined by approximately 76 percent in
Naples Bay. In contrast, the less-impacted
estuaries of Rookery Bay and the Ten Thousand
Islands have experienced salt marsh and
mangrove declines of12 and 5 percent,
respectively.
Results: Element 3, Performance Measures
Performance measures were developed as a
baseline against which to measure the
improvement, or "lift" due to implementation of a
proposed project. Performance measures were
developed with respect to seasonal water levels
for natural systems, for freshwater discharges to
estuaries, pollutant loads, and groundwater
aquifers.
Natural systems. Functional assessment scores,
or performance measures, are presented below
(Table ES-l) for the watersheds in Collier County.
Higher scores indicate greater similarity to pre-
development conditions. Average scores are lower
in the Golden Gate-Naples Bay watershed due to
extensive canals systems and development and
indicate that hydrologic restoration may provide
the greatest opportunity for measurable
improvement in functional value in Collier County.
Freshwater discharge to estuaries. Performance
measures (scores) are based on comparisons of
timing and volume of discharges to estuaries for
modeled pre- (NSM) and post- (ECM)
development conditions. Average monthly
PAGE ES-8 COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
Executive Summary
Table ES-1. Average Functional Values (Performance
Scores) for Non-Urban Lands, by Watershed
Non-
Urban Vegetation rlydrology LSI
Watershed Acres Score Score Score.
Cocohatchee- 111,250 7 7 8
Corkscrew
Golden Gate- 36,627 5 6 6
Naples
Rookery Bay 83,105 8 6 9
Faka Union/
Okaloacoochee 431,414 9 6 9
SR 29/
Fakahatchee
discharge volumes from the NSM and ECM
models were used to define the baseline
distribution and total volume of flow from each
watershed. Higher scores indicate greater
similarity to pre-devel~pment conditions. The
Golden Gate - Naples Bay watershed had the
lowest annual score of 1.6 and is indicative of the
year round flow surplus into Naples Bay. The
scores for the Rookery Bay indicate dry season
freshwater deficits, likely due to the reduced
watershed caused by construction of the Golden
Gate Canal. The wet season surplus is likely due to
stormwater runoff from the Lely area and from
the agricultural lands in the southeastern
watershed.
Table ES-2. Discharge to Estuary Performance Scores
Dry Wet
. Annual Season Season
Watershed Score Score Score
Golden Gate-Naples Bay 1.5 1.9 1.0
Cocohatchee-Corkscrew 5.4 6.9 2.5
Rookery Bay 4.3 3.1 6.8
Faka Union,
Okaloacoochee / SR 29, 5.6 7.4 2.0
and Fakahatchee
Scores for the Cocohatchee-Corkscrew, and
eastern watersheds suggest that the operational
controls used to manage dry season flows are
reasonably effective at.matching pre-development
flow conditions. This cl?ntributes to the higher
scores during the dry ~eason. Low wet season
^TKINS
}~
scores in all watersheds point to the effect of
development on the natural drainage system.
Surface water pollutant loads. Pollutant load
performance measures (scores) for watersheds
were based on data for the individual basins (as
designated by FDEP water body identification
numbers, or WBIDs) that make up each
watershed. Scores were calculated as a function of
pollutant loads relative to medium density
residential reference loads (in contrast to NSM vs.
ECM model results). Current scores indicate that
the WBlDs of most concern are in the Cocohatchee
- Corkscrew and the Golden Gate - Naples Bay
watersheds, particularly the coastal segment of
Naples Bay and the Gordon River Extension. The
Golden Gate - Naples Bay watershed received the
lowest average scores for the other pollutants
because of the presence of areas of urban
development with no treatment. Lake Trafford
WBID had a score of zero because the WBID
includes only the lake itself.
Surface waters. As described previously the
eastern watersheds exhibited the highest
functional value, i.e. performance measure,
therefore the least change from pre-
development conditions, when compared
with the other watersheds. In the estuaries,
functional value was less in the Rookery Bay
and Cocohatchee-Corkscrew watersheds,
and least in the Golden Gate-Naples
watershed (see table below).
Aquifer recharge/yield. Weighted average
performance scores for each WBlD in each
watershed are based on the average dry
season water levels with respect to
differences between existing (ECM) and pre-
development (NSM) conditions. Low
performance scores were typically
associated with wellfield locations,
agricultural irrigation concentrations, and
canals. Scores are mapped for the water
table aquifer in Figure ES-13: high scores
(10) indicate high performance or relatively
little change in dry season condition when
compared with the NSM. Low scores (1)
indicate areas where water demand to meet
agricultural and potable water supply needs
PAGE ES-9 COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
Executive Summary
reduce the performance scores relative to historic
groundwater levels against which they are
measured. Areas that score poorly tend to
correspond to wellfield locations.
Flood risk Design storm simulations were used
to evaluate flood inundation and the Level of
Service (LOS) for roads in Collier County. Roads in
the county are identified as either evacuation
routes ,or other surface streets. Most evacuation
routes meet 2S-year /72-hour storm event criteria,
while most surface streets fail. There is no
effective means available to rank (assign priority)
projects to address flooding. Therefore:
1. The first priority for the County is to further
evaluate evacuation route segments identified
under the proposed LOS analysis to ensure
the route can remain open for large storm
events.
~.>
I
I
I
IlOQ"nd
Ped"Dm1.ilm:e SCOR
j W.lerT"bl.Aqt.,lUtr
1-.::',.
1:=.:, ~:
I':=~,
I ri
I
,
.\
I
8 M.1e5
Figure ES-13. Performance scores for surficial aquifer
^TKINS
2. The secand priarity is further evaluatian af
existing arterial, callectar, and neighbarhaad
raads that, based an propased LOS far the 10-
year design starm, meet the 10-year LOS and
may also. meet the LOS criteria far the 25- and
100-year starm events.
Results: Element 4, Analysis of Alternatives
and Recommendations
Structural and nan-structural prajects were
identified as patential salutians to. existing and
anticipated water resaurce and natural systems
issues in Callier Caunty based an analyses
campleted as part af this study, as well as
previausly campleted studies.
Non-structural (policy) recammendations.
Nan-structural recammendatians affer lang-term
regulatary benefits critical sa a sustainable
watershed management plan Benefits due to. nan-
structural (palicy) recammendatians are
anticipated to. substantially imp rave watershed
canditians in Callier Caunty.
Nan-structural planning cantrals include land use
ardinances, develapment regulatians, mitigatian
banking, and ather incentives far improving
watershed canditians (benefits). Nan-structural
BMPs far watershed management facus an
preserving and pratecting natural features af the
landscape to. manage starmwater at its saurce.
Evaluatian afthese BMPs includes an analysis af
the applicable regulatary framewark
Recammended nan-structural initiatives address
issues that range fram land develapment
guidelines to. water quality manitaring and are
listed belaw.
. Law Impact Develapment Pragram
· Starmwater Retrafit Pragram
· Fee-Based Starmwater Utility
. Allawable Maximum Site Discharges
· Flaad Pratectian Levels afService Criteria
· Valume Cantral far Large Starm Events
. Galden Gate Estates Transfer af Develapment
Rights Program
. Galden Gate Estates Watershed Mitigatian
Pragram
PAGE ES-l0 COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
Executive Summary
. Madified Operatians afWater Cantral
Structures
. Water Quality Manitaring
. Additianal Watershed Protectian Pragrams
'j'
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Structural improvement recommendations. In
cantrast with nan-structural recammendatians,
structural (engineered) impravements affer shart
term impravements. They are nat a lang term
salutian and the lift assaciated with these prajects
ranged fram anly 10 to. 15 percent.
After an initial screening afmare than 150
prajects, 27 patential structural impravement
prajects were evaluatec with respect to.
permitting, canstructability, enviranmental
benefits, and casts in the Callier Caunty
watersheds. PermittiIl:g canstraints reduced the
number of projects for further evaluation to 18.
The 18 projects were evaluated against
I
corresponding performance measures developed
far each af the 4 perfarmance criteria (freshwater
discharge, water quality, wetland hydrology/
habitat, and graundwater recharge). Praject
benefits were measure~ by the "lift," or the
im'provement in perfoE!nance criteria anticipated
as a result afthe prapased praject, as described
earlier. Weighting factQrs were integrated into. the
selection pracess to. aq~ress bath individual
watershed characteri~ics (e.g. watershed size)
and the relative impartp,nce af the watershed
issues (e.g. extent af d~velopment). Cast, equal to.
the canstructian cast of the praject, was estimated
and benefit/cast (B/C) ratias were developed.
Perfarmance sares natlnalized to. a 0 to. 10 scale
,,~
and were averaged far each af the 4 criteria. Each
t.
"
^TKINS
,.,
combined scores is the quotient of the average
performance score divided by the cost. Combined,
normalized project scores with respect to
performance criteria, cost, and BIC ratio are listed
in Table ES-3.
The final 10 projects, in order ofBIC ratio, range
in cost from $96,000 to approximately $7 million
(Table ES-4). Priority proj ects, in order of
preferred implementation, are briefly outlined
below.
1. Northern Golden Gate Estates Flow-way
Restoration. The project ranks second in BIC,
but first in benefits. It has the most lift
anticipated for each of the 4 performance
criteria, but only minimal lift for the discharge
to estuary criteria.
2. North Belle Meade Spreader Swale project
provides lift with respect to each of the 4
performance criteria. The primary benefit is
lift in discharge to estuary in the Golden Gate
and Rookery Bay watersheds, based on an
Executive Summary
anticipated 10 percent reduction in flows to
Naples Bay and increased flows to Rookery
Bay. Moderate lift is expected for the other 3
performance measures.
3. The Henderson Creek Diversion project is
considered the third most important project
to implement. It ranks fourth in the BIC ratio
and, similar to the North Belle Meade project,
it provides lift to estuary discharge for the
Golden Gate and Rookery Bay watersheds. It
does not provide lift to the 3 other
performance criteria.
4. The Corkscrew Regional Ecosystem
Watershed Restoration has the greatest BIC
ratio among the 10 projects. However, the
anticipated lift in wetland hydrology is local
and does not address some of the more
important issues facing the county.
Consequently, the project was assigned a
lower priority for implementation despite the
higher BIC ratio.
Table ES-3. Normalized Performance Scores and B/C Ratios for the Four Performance Criteria
Discharge Wetland Estimated
to Water Hydrology/ Ground- Total Cost Benefit-to-
Project Name Estuary Quality Habitat water Score ($ million) Cost Ratio
Corkscrew Regional Ecosystem 0.00 0.00 2.01 0.00 2.01 0.10 20.95
Watershed
North Golden Gate Estates 0.05 10.00 10.00 10.00 30.09 -2.37 12.71
Flowway Restoration
North Belle Meade Spreader 8.60 2.58 2.70 2.76 25.24 7.03 3.59
Swale
Henderson Creek Diversion 10.00 0.00 0.00 0.00 20.00 5.71 3.50
South 1-75 Canal Spreader 0.13 1.04 7.81 1.38 10.49- 3.13 3.35
Swale
Wolfe Road Wetland 0.00 0.11 0.00 3.34 3.45 1.42 2.44
Treatment System
Upper Golden Gate Estates 0.00 0.00 0.00 0.67 0.67 0.55 1.21
Canal Weir Constuction
Orange Tree Canal Control 0.00 0.00 0.00 0.67 0.67. 0.55 1.21
Structure Installation
Henderson Creek Off-Line 1.06 0.14 0.00 0.07 2.33 2.93 0.79
Storage Reservior
US HWY 41 Stormwater 0.00 0.03 0.12 0.00 0.15' 0.54 0.28
Treatment Area
PAGE ES-ll COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
ATKINS
Executive Summary
Table ES-4. Cumulative Benefit (Performance Scores) and Cost of Project
Cocohatchee-Corkscrew Golden Gate - Naples Bay Rookerv Bay
Cumulative lift Cumulative lift Cumulative lift
.~ 2- 2-
'" '" Cumulative Cost
::J ~ ~
Project Name iii ~ j; ~ u.J j; [Millions of
B J'l B ~ B ~
Iii '" Iii '" Iii '" Dollars)
OJ ::J ?Ii ~ OJ d ~ ~ OJ ::J ~ ~
~ cJ 0 "D ~ 0 "D l'!' cJ 0 "D
'" ~ '2 <: '" OJ '2 <: '" '2 <:
~ J'l ::J ~ ::J ~ J'l ::J
~ '" "D 0 ~ "D 0 '" "D ~
> 3 > >
c ~ I l5 c I l5 c ~ I '"
Corkscrew Regional Ecosystem Watershed 0.000 0.000 0.031 0.000 $0.096
North Golden Gate Estates Flowway Restoration Project 0.010 0.682 0.118 0.002 $2.464
North Belle Meade Spreader Swale(l) 0.900 0.682 0.118 0.002 U50 0.435 0.036 0.200 $9.490
South 1-7S Canal SpreaderSwale 1.289 O.S23 0.088 0.250 $12.621
Henderson Creek Diversion (1) 1.345 0.682 0.118 0.002 2.124 $18.329
Wolfe Road Wetland Treatment System 1.345 0.690 0.118 0.007 $19.745
Henderson Creek Off-line Storage Reservior 2.282 0.547 0.088 0.255 $22.674
Upper Golden Gate Estates Canal Weir Constuetion 1.345 0.690 0.118 0.008 $23.226
Orange Tree Canal Control Structure Installation 1.345 0.690 0.118 0.009 $23.778
US HWY 41 StormwaterTreatment Area 2.282 0.553 0.089 0.255. $24.322
Total Benefit or Cost 0.000 0.000 0.031 0.000 1.34S 0.690 0.118 0.009 2.282 0.553 0.089 0.255 $24.322
Conclusions
Canal construction and urban development in
Collier County have altered what were historically
regional surface and groundwater patterns,
resulting in multiple, artificially created
watersheds that have reduced water quality,
altered freshwater flows to estuaries, reduced
groundwater recharge, and altered natural
ecosystems.
The CCWMP provides an analysis of existing
conditions in the County with respect to changes
from pre-development conditions and provides
County-wide recommendations to:
. Restore historical water quantity and
estuarine discharges
. Improve water quality within the watersheds
and estuaries
. Address flood control and water supply issues
NSM and ECM results were successfully used to
evaluate changes and develop performance
measures that were, in turn, used to quantify
relative benefits anticipated from implementing
PAGE ES-12 COLLIER COUNTY WATERSHED
MANAGEMENT PLAN - DRAFT
proposed structural projects. Several projects
were recommended as-part of the benefits and
B/C analysis. Structural projects recommended, in
order of~referred implementation are:
. Northern Golden Gate Estates Flow-way
Restoration
. North Belle Meade Spreader Swale
. He.nderson Creek Diversion
. Corkscrew Regional ~cosyste~ Watershed
Restoration
N onstructural, policy ~commendations that have
longer term, sustainable ecosystem benefits were
also developed. These non-structural measures
offer an alternative to structural measures and
emphasize a more-inte'grated approach to
managing water resources in Collier County.
Recommendations incl:Ude actions related to low
impact development (LID) regulations,
transferrable development rights, retrofit
programs, better management and/or
improvements of existing control structures, and
monitoring.
.J
ATKINS