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The What's New section of the Hydrologic Performance Measures webpage was created to keep you informed of the latest news on the status & schedule of the Restudy simulation results and the hydrologic performance measures.

September 13, 2002

Natural System Model v4.6 Provisional

The Natural System Model v4.6 Provisional run has been posted. There are two Performance Measure sets, Natural System Model v4.5 Final vs. Natural System Model v4.6 Provisional and Natural System Model v4.6 Provisional vs. 1995 Base, 2050 Base and Alternative D13R.

August 13, 2002

95BSRR (LEC2020) Sensitivity Runs

95BSRR from LEC2020 was run with permitted agricultural demands in the Istokpoga & Caloosahatchee Basins, this resulted in the run called Permitted 1. Permitted 2 was run with the same changes as Permitted 1 along with permitted public water supply demands for the Lower East Coast (Palm Beach, Broward and Miami-Dade). The Authorized run included the changes of Permitted 1 and Permitted 2 along with the following authorized projects: Modified Water Deliveries, C-111 and Everglades Construction Project.

Click here for a description of the 95BSRR (LEC2020) Sensitivity Runs.

May 7, 2002

D13R with Preliminary V5.0 Topo (D13RwNT) - Sensitivity posted

A performance measure set that compares alternative D13R (Nov 98) with the same simulation run with the preliminary version of SFWMM v5.0 topography has been posted. D13R with the preliminary new topo is labelled D13RwNT.

This is essentially a topography sensitivity analysis since both simulations were made with SFWMMv3.5 and this version of the model has not been calibrated for the new (v5.0) topography. Also as the calibration is finalized and reviewed the v5.0 topo may be updtaed, hence it is referred to as preliminary v5.0 topo. Where possible NSMv4.5 has been included in the performance measures, but in many cases, in order to reflect both the v3.5 and v5.0 preliminary topo, the NSM comparison was ommitted from the performance measures.

Click here for a description of the D13RwNT run containing maps showing the preliminary v5.0 topo, v3.5 topo and their differences.

April 22, 2002

WPA Last Added Increment posted

A performance measure set that compares 2050Base, WPA-LAI, WPA-SP and AltD13R (Nov 98) has been posted and made the default performance measure set.

The WPA-SP (selected plan) run is the same as WPA-TSP (tentative selected plan) except for the following changes:

WPA-SP uses the same wellfield demands and distribution as AltD13R (Nov 98).
Structure S-124, located at the intersection of the North New River Canal and the L-35A borrow canal is removed. S-124 should have been removed in WPA-TSP.

The WPA Last Added Increment Run (WPA-LAI) includes all of the CERP features in the WPA-SP, but does not include any WPA Recommended Plan components (See the WPA Recommended Plan description for more information). It is equivalent to the CERP with WPA features removed.

March 7, 2002

2010+WPA (Revised) posted

A performance measure set that compares 1995Base, WPA-TSP and the Revised 2010Base, 2010+WPA, and 2010+WPA Scenario runs, has been posted and made the default performance measure set. The differences between the Revised 2010 runs and the previous runs are:

Inflows to Everglades National Park thru S-333 are not constrained by G3273 stages. (Note: A 9' constraint at L-29 remains the same).
Environmental deliveries from Lake Okeechobee to the Everglades are limited to the same as in the 2050Base.

February 14, 2002

2010+WPA posted

A performance measure set that compares 1995Base, 2010Base, 2010+WPA, 2010+WPA Scenario, and WPA-TSP has been posted and made the default performance measure set. The 2010 Base is new future condition that includes changes to the regional system expected to be in place by 2010. The 2010+WPA includes features in the 2010 Base plus WPA Recommended Plan components. The 2010+WPA Scenario run is equivalent to the 2010+WPA simulation but with slight modifications. All of the simulations used SFWMMv3.5.

2010 Base (For more information see the WPA 2010 Base Case Summary)

The 2010 Base includes many of the same features as the 2050 Base with the following modifications:

Public water supply demands are same as used in the 2010 Restudy Implementation schedule.
Public water supply withdrawal locations are the same as recommended in the Lower East Coast Regional Water Supply Plan. (This is the same as the WPA PSP and WPA TSP simulations.)
St Lucie Canal Basin demands are the same as 1995 Base and Caloosahatchee River Basin demands increase 40% from the 1995 Base
Western C-4 Structure and C-11 Water Quality Treatment Critical Projects are included.
C-4 Flood Mitigation Project (two impoundments, 844 acre) is included.
55 MGD Miami-Dade County aquifer recharge facilities are included.

2010+WPA

The 2010+WPA includes the same features as the 2010 Base plus the WPA Recommend Plan. See the WPA Recommended Plan description for more information. Generally, the Recommended Plan includes improvements to the Strazzulla Wetlands, the Hillsboro Impoundment, C-11 Impoundment, C-9 Impoundment, WCA 3A/3B Seepage Management, Divert WCA 2B Flows to CLBSA, North New River Improvements, Dade-Broward Levee and Canal improvements, Divert WCA 3 Flows to CLBSA, improvements to L-30 (part of CLBSA) and C-4 Structure.

Minor modifications to the Recommended Plan were incorporated into the model simulations as follows:

Divert WCA-2B Flows to NESRS.Simulated the same as in the LEC 2020 simulation with a gravity structure to move WCA-2B water to L37 (Recommended Plan specifies 1500 cfs capacity, but model incorporated a 900 cfs limit to match capacity of downstream S-356 structure).
Divert WCA-3 Flows to NESRS.Component not simulated (S-356 capacity is used up by WCA-2B excess water).
L-30 Operations.Wet season operations include using L-30 to send WCA 2B excess water to S-356 and then to SRS. Dry season water supply operations include using Miami Canal to convey water to the L-30 Canal (S-337), then to the L-31N Canal (S-335) to deliver water to South Dade Conveyance System.
Dade-Broward Levee and Canal.The Dade-Broward Levee-Canal conveys LOK deliveries to maintain the C-4/C-2 Canals. Includes control structure on the northern levee at the intersection of C-4. The Dade-Broward Levee and Canal will not be maintained at elevation 5.1’ NGVD; structures are open to pass deliveries.
WCA 3A/3B Levee Seepage Management.A gated culvert is included to pass seepage water from L-33 to C-9 Canal to maintain minimum stages.

2010+WPA Scenario

Divert of WCA-2B and 3A Flows to NESRS.S-356 capacity increased from 900 cfs to 1300 cfs to deliver more excess water to SRS via L-29 canal. WCA-2B simulated the same as D13R with three overflow structures and two divide structures (Recommended Plan specifies 1500 cfs capacity, but model incorporated a 1300 cfs limit to match capacity of downstream S-356 structure).WCA-3A simulated the same as D13R but with half the structure capacity.
Dade-Broward Levee and Canal. Dade-Broward Levee and Canal conveys LOK dry season deliveries through L-31N to the South Dade Conveyance System by adding a 800cfs pump to move water from Dade-Broward Levee Canal into L-31N Canal.

September 21, 2001

WPA Tentative Selected Plan posted

A performance measure set that compares 1995Base, 2050Base, AltD13R (Nov 98), WPA PSP, and the WPA Tentative Selected Plan (WPA-TSP) has been posted and made the default performance measure set. The WPA-TSP is equivalent to the WPA-PSP except for slight modifications to the Hillsboro Impoundment and the C-9 Impoundment components. See the alternative description section for more information.

April 11, 2001

WPA Pre-Selected Plan and Scenario comparison with D13R0698 posted

A performance measure set comparing D13R0698 with the WPA Pre-Selected Plan and the WPA scenario PSPS1234 has been posted. The 1995 and 2050 Bases are also shown on the same performance measure set. Note that this performance measure set is different from that posted on February 13, 2001, in which D13R1198 was compared with the WPA-PSP and PSPS1234.

April 11, 2001

D13R June 1998 (D13R0698) vs D13R November 1998 (D13R1198) posted

A performance measure set comparing D13R as modeled in June 1998 (now referred to as D13R0698) and D13R as modeled in November 1998 (now referred to as D13R1198) has been posted. Changes were made to D13R to correct errors in the way the modeling of D13R0698 represented some specific design features. A document describing the changes in D13R from June to November 1998 has been included under the "Alternatives Desc/Evaluation" and can also be accessed by clicking "HERE" now.

Note that all performance measure comparisons with D13R made between April 13, 2000 and February 13, 2001 were made against D13R1198. These include the Water Preserve Area Feasibility Study and Indian River Lagoon Project alternative simulations. Alternative comparisons prior to April 13, 2000 were made against D13R0698.

February 13, 2001

WPA Pre-Selected Plan Scenarios have been posted

Six scenarios on the WPA Pre-Selected Plan were simulated to evaluate the ability of the WPA-PSP to match the D13R simuation with some non-WPA assumptions set the same as in D13R. These assumptions were originally changed in the WPA-PSP to better represent reality with the South Florida Water Management Model, however are changed back in each of four scenario simulations for better comparison with D13R and to evaluate their individual impacts. Two additional scenarios first combine the changes in Scenarios 1, 2 and 3, and then combine the changes in Scenarios 1, 2, 3 and 4.

Scenario 1, (PSP-S1) is the same as WPA-PSP, except that the L-31 canal is returned to as close as possible to the D13R configuration.

Scenario 2,(PSP-S2) is the same as WPA-PSP, except for the relocated utility wellfields which are returned to the D13R configuration.

Scenario 3, (PSP-S3) is the same as WPA-PSP, except that flows are no longer sent to Pond Apple Slough for restoration purposes to be similar to D13R.

Scenario 4, (PSP-S4) is the same as WPA-PSP, except that C-4 canal operational levels are changed from 4.0 ft back to 3.0 ft and simultaneous pumping of reuase water and backpumping from the C-4 canal to the Bird Drive reservoir are permitted to be consistent with D13R.

Two performance measure sets have been posted. The first compares each of the four scenarios PSP-S1, PSP-S2, PSP-S3 and PSP-S4 with the WPA Pre-Selected Plan WPA-PSP. The second compares the combination scenarios, PSP-S123 and PSP-S1234 with the WPA-PSP and D13R.

February 12, 2001

L67 Decompartmentalization Modeling Evaluation Posted

A Hydrologic Systems Modeling Evaluation of the Removal of L-67 Levees and Canals from the Comprehensive Evergaldes Restoration Plan (D13R) has been posted. Click HERE to see a report on this evaluation.

December 12, 2000

IRL Round 1 Modeling: Three Scenarios Posted

A performance measure set that compares three IRL scenarios with Alt D13R has been posted and made the default performance measure set. IRL-1A reflects a refinement of D13R components in the St. Lucie Basin and Estuary. IRL-1B includes diversion of water from the C-23 and C-24 basins into the C-44 canal and two new STA's. IRL-1C is similar to IRL-1B except that the quantity of water diverted to the C-44 basin is less than in IRL-1B. For a more detailed description of the scenarios see "Alternatives Desc/Evaluation" button.

October 25, 2000

WPA Pre-Selected Plan posted

A performance measure set that compares 1995Base, 2050Base, AltD13R, WPA Alt.3, and the WPA Pre-Selected Plan (WPA-PSP) has been posted and made the default performance measure set.

July 10, 2000

WPA Alternative 3 posted

A performance measure set that compares 1995Base, 2050Base, AltD13R, WPA Alternative 2, and WPA Alternative 3 has been posted and made the default performance measure set.

April 14, 2000

WPA Alternative 2 posted

A performance measure set that compares 1995Base, 2050Base, AltD13R, and WPA Alternative 2 has been posted and made the default performance measure set.

October 22, 1999

Monthly and Annual Overland flow vectors and ponding depth animations have been added to the View Maps and Tables section for comparisons of the 1995 Base and the Restudy Plan (AltD13R) with the Natural System.

October 6, 1999

A water budget map key has been posted. See "View Maps and Tables", "Water Budget Ascii Files and Maps".

July 1, 1999

2010 and 2015 Evaluation Updated

The evaluation of the 2010CS and 2015CS has been updated to include more detail and the Lake Okeechobee Regulation schedule used in the 2010 and 1015 Case Study simulations.

June 4, 1999

2010 and 2015 CASE STUDIES POSTED

The 2010 and 2015 Case Studies represent snapshots in time of the simulated performance of the regional system using the April 1999 Implementation Plan. A summary of the components used in the 201CS and 2015CS together with an initial evaluation of the performance of these simulations can be found under "Alternatives Desc/Evaluation", "Description of Alternatives" or "AET Summary of Evaluated Alternatives"

June 1, 1999

Primary Water Budget Component Maps have been posted under "View Maps and Tables", "Water Budget ASCII files and MAPS". These are not measures of performance but indicators of the volumes of flow between different geographical areas as a result of the different alternatives. At this stage they are available for the NSM, 95BSR, 50BSR, D13R and D13R4.

February 18, 1999

The AET report on Alternative D13R Scenario D13R4 has been posted under "Alternatives Desc/Evaluation", "AET Summary of Evaluated Alternatives"

January 15, 1999

ALTERNATIVE D13R SCENARIO D13R4 POSTED

A final version of the scenario to capture additional water "lost" to tide, labeled D13R4 has been posted. The posted performance measure set compares scenario D13R4 which was built on the initial attempt to capture additional water posted as D13R1 on January 11, 1999. Modifications from D13R1 to D13R4 were predominantly operational adjustments to better distribute the additional water to Everglades National Park and Biscayne Bay.

A description of the final scenario to Alternative D13R, labeled D13R4, is available under the "Alternatives Desc/Evaluation" button.

January 11, 1999

ALTERNATIVE D13R SCENARIO D13R1 POSTED

A scenario based on alternative D13R, labeled D13R1 has been posted. This scenario incudes an attempt to capture additional water that was being "lost" to tide and return it to the natural system. Further scenarios using Alternative D13R will be made over the next 4 days with a final version of the scenario to capture additional water scheduled to be posted on Friday January 15, 1999.

A description of the initial scenario to Alternative D13R, labeled D13R1, is available under the "Alternatives Desc/Evaluation" button.

January 7, 1999

IMPLEMENTATION PLAN - FINAL 2010 CASE STUDY POSTED

The final SFWMM simulation of the 2010 Case Study (formerly referred to as Phase A) of the Implementation Plan has been posted. The performance measure set posted on 12/18/98 was replaced with a set comparing the 1995Base, 2050Base, AltD13R, initial 2010 Case Study simulation (designated PHASEA1 on the performance measures), and final 2010 case Study simulation (designated PHASEA5 on the performance measures).

Revisions to the initial 2010 Case Study simulation were made by the AET subteam chairs during the period 1/4/99 - 1/6/99. A description of the final 2010 Case Study components will be put under the "Alternatives Desc/Evaluation" button on the left hand side of the screen as soon as possible.

December 18, 1998

IMPLEMENTATION PLAN - INITIAL 2010 CASE STUDY POSTED

The initial SFWMM simulation of the 2010 Case Study (formerly referred to as Phase A) of the Implementation Plan has been posted for review. Performance measures compare the 1995Base, 2050Base, AltD13R, and initial 2010 Case Study (designated as PHASEA1) simulations. A brief overview of the 2010 Case Study components is available under the "Alternatives Desc/Evaluation" button on the left hand side of the screen. Any revisions to the design of the 2010 Case Study are scheduled to be made during January 4-6, 1999 with posting of the final Phase A simulation scheduled for January 7, 1999.

September 11, 1998

A Special Investigations section has been added under the "Alternatives Desc/Evaluation" button. Descriptions of the special investigations are given in a Summary which describes all of the special investigations, and in a Details section which links to documents describing each individual investigation.

Special investigations include modeling undertaken to assess the sensitivity of the selected alternative (ALTD13R) to the removal of individual components, and the modeling and evaluation of scenarios proposed at various stages during the restudy alternative development process.

The following Special Investigations have been included:

September 8, 1998

The Pink Shrimp Recruit Catch Rate on Tortugas Grounds, performance measure for Alternative D13R has been posted. It can be accessed through, "Bays","Florida Bay".

September 1, 1998

A revised version of the Annual and Daily Average Demands for LEC Service Area Water Utilities has been posted under "View Maps and Tables"/"Inputs". This reflects the revisions to the 2050 Base that incorporate the SFWMD's mandatory conservation program, which is a 12 % reduction over the original 2050 Base. Alternative D (and Alt. D13R) includes component AAA which requires an additional 6% reduction in public water supply demands in the LEC.

August 21, 1998

Revised versions of the stage hydrographs and stage duration curves for canal C-103 at S-20F have been posted fot the AltD13R performance measure set.

August 10, 1998

A revised draft version of the Alternative D13R description has been posted.

July 24, 1998

The Alternative Evaluation Team (AET) has completed their review of Alternatives A - D, plus the refinements made to D resulting in D13R. This review resulted in selecting Alt D (D13R) as the initial draft plan. This draft report includes the evaluation methodology and the resulting matrixes developed for each subregion. The report and matrixes use several evaluation methods to garner the all of the team's perspectives: a ranking amongst the alternatives, a letter grade based on how well the alternative achieved its goals, and a color indicating its ability to achieve long-term success. The report can be found under the alternative description/evaluation button on the left hand side of the screen.

July 2, 1998

A minor error was identified in the calculation of the C23/C24/Northfork/Southfork basin runoff that affected the two St. Lucie performance measures graphics that were posted on June 28, 1998. This error was corrected and both performance measure graphics have been updated and reposted.

June 29, 1998

Alternative D13R has been refined to include improved sizing of storage facilities in the Indian River Lagoon Basins. The two St. Lucie performance measures affected by this refinement have been reposted

June 19, 1998

REFINEMENT OF INITIAL DRAFT PLAN: ALTERNATIVE D13 REVISED and POSTED

Alternative D13 has been revised (ALTD13R) to include the same truncations of the time series triggers in Rotenberger and Holey Land Wildlife Management Areas that were included in Alternative D but omitted in Alternatives D7 and D13. This improves the performance of ALTD13R in Rotenberger and Holey Land to the same as it was in Alternative D, while maintaining the improved performance that Alternative D13 showed in the Water Conservation Areas and the Everglades National Park.

June 16, 1998

REFINEMENT OF INITIAL DRAFT PLAN: ALTERNATIVES D7 and D13 POSTED

Refinements have been made to the Initial Draft Plan (Alternative D) to improve its performance in four key areas of the Everglades. These refinements have been posted as Alternative D7 and Alternative D13. Alternative D7 includes operational modifications to Alternative D, while Alternative D13 includes both operational and structural changes to Alternative D to make it more like Alternative B. Click here for details on the refinements and a brief summary of their preliminary results.

June 2, 1998

The Everglades Water Quality Model is now on line. Results from this model can be viewed by selecting "Other Models","EWQM"

Full descriptions of the components of Alternatives A, B, C and D have been placed under "Alternatives Desc/Evaluation","Description of Alternatives"

May 20, 1998

Tables listing the Length of Canals, Levees and the Number of Structures within the Everglades Protection Area, Big Cypress National Preserve, Holey Land and Rotenberger Wildlife Management Areas, as simulated by the SFWMM v3.5 have been included under "View Maps and Tables","Individual Maps and Tables", "Model Input".

Details of the modifications to NSMv45 to create the final version of NSMv45 (posted under the What's New on April 27, 1998) can now also be accessed from "Alternatives Desc/Evaluation","Descriptions of Alternatives","NSMv45 (Mods to creat final NSMv45)".

The Lake Worth Lagoon Salinity performance measure for the Revised Base run set has been reposted to correct a post processing glitch.

May 19, 1998

The C-1 canal at S-21 has now been correctly labeled as such. Previously it was incorrectly labelled as C-100B at S-21.

May 18, 1998

The Table and Graph of Drydowm Length vs. Landscape Extent have been posted for Alternatives A, B, and C for the Ridge and Slough landscape.

May 15, 1998

The following performance measure graphics were corrected for the Alt D portion of the set comparing Alternatives A, B ,C and D with the revised 2050 Base. A post processing glitch had caused the Alt C results to be shown in the Alt D portion for these graphics.

All the Estuary Performance measures: 2 for St Lucie, 2 for Caloosahatchee and 1 for Lake Worth Lagoon

The LOSA Total Demand Cutbak Report

Mean Annual irrigation Supplies and Shortages for Seminole Tribe, Big Cypress reservation

Annual Ag. Basin Reports for the Caloosahatchee, L-8, 236, S-4, Seminole Brighton and St. Lucie Basins

The Mean Annual Water Budget Report for the EAA has been revised to correct processing errors for the following 3 performance measure sets:

1995 and 2050 Revised Baseline Simulations

Alternative D (with Revised Bases)

Alternatives A, B, C and D (with 2050 Base)

May 14, 1998

LOWQM Performance Measures for Alternatives A, B, C and D have been posted. See "Other Models". The LOWQM has also been recalibrated. The new calibration includes burial of Phosphorous to deep sediments.

SFWMM post processing Water Budget ASCII files have been updated to show budgets for modeled EAA reservoir areas

The Structure Definition Glossary in the Water Budget ASCII files has been updated.

May 13, 1998

SET COMPARING ALTERNATIVES A, B, C and D POSTED

A performance measure set that compares alternatives A, B, C and D with the revised 2050 Base has been posted and made the default performance measure set. These results are the same as those posted on May 4 and May 11 but, combine the 4 alternatives in one set for ease of comparison.
Note: The 1995 Base is not shown on this performance measure set.

C-111 Operations as used in SFWMM posted under "View Maps and tables"," Model Inputs"

May 11, 1998

ALTERNATIVES A, B and C POSTED

Note: Alternatives A, B and C are revised versions of Alternatives 3, 4 and 5 respectively and are compared with the revised baseline simulations.

May 6, 1998

The component table for the revised alternatives has been included under "Alternatives Desc/Evaluation"

An analysis of the Alt 5 Public Water Supply Scenario has been included under "Alternatives Desc/Evaluation"

May 5, 1998

Water budgets for C43 and C44 Basins included under "View Maps and Tables","Water Budget Ascii Files"

Alternative D component descriptions posted under "Alternatives Desc/Evaluation"

Bird Drive Reservoir hydrographs and duration curves normalized and reposted

NSM4.5 PROVISIONAL vs NSM4.5 FINAL POSTED

Note: Only limited performance measures are available for this comparison, namely stage hydrographs and duration curves in the WCA's and ENP, and Indicator Region performance measures.

ALTERNATIVE 5 WATER SUPPLY SCENARIOS POSTED

Note: Three Water Supply scenarios are compared with Alternative 5, namely;

Alt 5 with No public Water Supply (NOPWS),
Alt 5 with 95 Base Public Water Supply (95PWS), and
Alt 5 with 2 x Public Water Supply (2XPWS)

May 4, 1998

ALTERNATIVE D POSTED

Note: Alternative D is equivalent to Alternative 6 but is labelled Alternative D because it is compared with revised baseline simulations (see note of April 27, 1998).

Stage hydrographs and duration curves have been included for Southern L-8 Reservoir

Descriptions for revised 1995 and 2050 base runs have been put under "Alternatives Desc/Evaluation","Descriptions of Alternatives"

The structure of "View Maps and Tables" has changed. Maps are now accessed by ALTERNATIVE, BASE RUN or SCENARIO rather than by their map categories. Under each Alternative one will find the individual categories such as Hydroperiods, Ponding etc.

April 29, 1998

Water Budget Files have been put in the View Maps and Tables section rather than on the FTP site. Only annual water budgets, the water budget annual summary plot file and the water budget control file are included.

April 27, 1998

REVISED VERSIONS OF 1995 AND 2050 BASELINE SIMULATIONS POSTED

Please note that the previously posted alternative plans and scenarios are not comparable to the revised baseline simulations since many of the baseline changes must also be made to the alternative plan simulations. These changes are being made as part of the effort to simulate Alternatives A, B, C, and D (refer to the schedule posted on April 20).

Revisions to the Baseline Simulations include:

The following new performance measures have been added:

Flow transects: Seasonal (wet/dry season) and monthly flows across 26 transects in the remaining Everglades and Big Cypress National Preserve. To access select [Regional | Flow Transects]

Stage hydrographs and stage duration curves at the following locations in the ENP: NP-44, NP-205, NP-206, NTS-1, R3110.

April 20, 1998

DELAY IN POSTING ALT 6 - REVISED POSTING SCHEDULE BELOW

APRIL 27: Post revised versions of 1995 and 2050 Base conditions
MAY 4 : Post Alternative 6 compared to revised base conditions. Alt 6 will be labeled and referred to as Alternative D to distinguish it as being compared to the revised, rather than original base runs.
MAY 11 : Post revised versions of Alternatives 3 through 5, labelled and referred to as Alternatives A, B and C respectively to indicate their revision and comparison with revised base conditions.

New Indicator Regions for Cape Sable Sparrow. The Cape Sable Sparrow W indicator region (IR 46) has been renamed Cape Sable Sparrow A to correspond with Dr. Stuart Pimm's subpopulation A. Indicator regions 54 through 58, labelled Cape Sable Sparrow B, C, D, E and F respectively, have been added to correspond with Pimm's subpopulations B,C,D,E and F.

Continuity Regions. Four perfromance indicators/measures have been added for each of 8 continuity regions. Each region consists of a pair of groups of cells on either side of an existing barrier to flow such as a canal or levee. The measures compare water elevation differences between the groups of cells across the barrier. Continuity region performance measures can be accessed by selecting Regional | Continuity Regions

Pink Shrimp Catch Rate. An estimate of the Pink Shrimp Recruit Catch Rate on the Tortugas grounds as a function of SFWMM flows across Tamiami Trail and air temperature at Key West has been added. It can be accessed by selecting Bays | Florida Bay

April 7, 1998

ALT 5 DECOMPARTMENTALIZATION SCENARIO 2 POSTED

Alt 5 decompartmentalization scenario 2 includes the same components as Alt 5 except that there is no Lake Okeechobee ASR, WCA-2B excess discharges are sent to NESRS rather than stored in the central Lakebelt storage, and WCA-3B excess is kept inside the WCA's rather than diverted to central Lakebelt storage. In addition to these flow routing differences, some targets have been modified.

March 31, 1998

ALT 5 DECOMPARTMENTALIZATION SCENARIO 1 RE-POSTED

Alt 5 decompartmentalization scenario 1 was reposted. It is the same as the Previous Alt 5 decomp scenario (posted 3/24/98) except that the WCA-1 interior canals have been removed and the LECSA water supply deliveries are via pipelines along the Hillsboro and NNR canals.

March 25, 1998

ALT 5 DECOMPARTMENTALIZATION SCENARIO 1 POSTED

March 24, 1998

ALTERNATIVE 5 POSTED

Two new Indicator Regions have been added, Pennsuco North and Pennsucco South. The Taylor Slough region has had upper and lower targets added.

Snake Creek (S-29) has had a flow target, that would maintains minimum salinity levels, added.

Crocodile habitat suitability salinity exceedance performance measures have been added for all the individual bays in Florida Bay. Access through Florida Bay.

Alligator performance measures showing average water depth during the mating season have been added. These can be accessed by clicking on the Everglades National Park Area, or under Performance Measures, ENP, Stage

Ponding Count Statistics have been added and can be accesssed under the View Maps and Tables section.

Stage hydrographs and duration curves have been included for the new reservoirs, namely EAA reservoir compartments A and B and Central Palm Beach County reservoir.

March 23, 1998

Delay in Alternative 5 posting

Alternative 5 will be posted on this web page tomorrow March 24, rather than the expected posting date today.

March 11, 1998

ALT4 WITHOUT LAKE OKEECHOBEE ASR SCENARIO POSTED

A set of performance measure graphics was posted comparing Alternative 4 with the scenario, "Alternative 4 with all Lake Okeechobee ASR Removed".

Note that in the Maps and Tables section all the maps and tables for each scenario have been grouped together rather than put under individual categories as for the alternatives.

The Remaining Glades hydroperiod matches and hydroperiod distribution figures have been updated for all the performance measure sets. Previously, these figures were being produced based on aggregation of vegetation areas which did not agree with the addition of the geographic areas. The new figures show a total area for the Remaining Everglades of 140800 acres, which is also obtained from the addition of the geographic areas.

February 25, 1998

L-35B REMOVAL SCENARIO POSTED

A set of performance measure graphics was posted comparing Alternative 4 with the scenario, "Alternative 4 with L-35B Removed". The scenario is denoted as NOL35B on the graphics and maps. This scenario was posted to illustrate the severity of the unintended consequences that result from removing the levee, L-35B, separating WCA-2A from WCA-2B.

February 23, 1998

ALTERNATIVE 4 POSTED

Alternative 4 was simulated per the ADT and Design Team recommendations with the exception of the removal of L-35B (component TT4). L-35B is the levee separating WCA-2A and WCA-2B. Simulation results showed that removal of L-35B caused several uninteded consequences that could not be overcome by significantly increasing the supply of Lake Okeechobee water to WCA-2A. These unintended consequences included:

a. excessive lowering of central & southern WCA-2A water levels

b. excessive shortening of WCA-2A hydroperiods

c. excessive lowering of Lake Okeechobee stages

d. excessive increase in Lake Okeechobee service area demands not met

e. marginal improvement in hydropatterns in ENP
To illustrate the severity of these unintended consequences, a scenario (Alternative 4 without L-35B) will be posted on 2/25.

Animated flow maps have been included in the "View Maps and Tables" section.

Stage Duration curves with Flood Control targets for the 1983-1993 period have been produced for selected South Dade cells.

Stage Duration curves and Stage hydrographs have been produced for the new North Lakebelt Reservoir.

Lake Worth Lagoon Salinity envelope criteria performance measure has been produced. It can be accessed from the Estuaries and by clicking on S-155 in LEC SA-1

Targets have been added to the Biscayne Bay Surface Water Flows performance Measure

Water budgets for Southeast Dade and the South Dade Wetlands have been included in the water budgets on the ftp site.

February 19, 1998

A Utility Demand Table for the LEC utilities has been included under Inputs in the View maps and Tables section.

Structure definitions for water budgets have been put with the water budgets output on the ftp site.

Biscayne Bay performance measures have been included for ALT3 in the Regional / Indicator Regions section.

February 2, 1998

Indicator region reports giving dates that each inundation/drydown period begins, and the average depth of inundation or drydown have been included in the "pmdir" directory of the ftp site.

January 30, 1998

WCA DECOMPARTMENTALIZATION SCENARIOS POSTED

Three WCA decompartmentalization scenarios have been posted. Go to [Alternative Desc/Evaluation][Descriptions of Alternatives] for details.

The Evaluation Form now has the ability to post comments directly. To view the comments, go to [Alternatives Desc/Evaluation] [Individual Comments on Alternatives]

January 29, 1998

Mean Annual Overland Flow Maps have been included in the "View Maps and Tables" section.

A STATUS of PERFORMANCE MEASURES and INDICATORS table has been included and can be accessed from the "About the P.M.'s" Button. This reflects the status of the measures and indicators being developed specifically for the C&SF Project.

January 26, 1998

ALTERNATIVE 3 POSTED

Revised AET/ADT schedule (comments date advanced by 2 days)

New LEC and LOSA Water Supply Performance Measures

Modifications to Indicator regions including new region for Cape Sable Sparrow W

Water Budget report for EAA

Additional SFWMM output data on the ftp site can now be accessed from the "View Maps and Tables" and "About the SFWMM" buttons

January 15, 1998

The OTHER MODELS button has been connected to the Lake Okeechobee Water Quality Model and the Mangrove Model.

December 10, 1997

ALTERNATIVE 2 POSTED

Water Supply Performance Measures

Flows to Tide

Taylor Creek, Nubbin Slough Reservoir

Stage Duration Curves for Indicator Regions

BCNP Perfomance Measures

Regional Maps for 1991 (Average Year)

Biscayne Bay PM

FTP site with maps, performance measures, maps and SFWMM output

December 4, 1997

Indicator regions performance measures have been posted to now count continuous ponding from the end of the period on the first inundation graph to the beginning of the period on the second inundation graph as a single inundation event. Data in the inundation duration summary table has been changed to reflect this method of counting events.