Hydrology & Hydraulics Bureau and Interagency Modeling Center

Transcription

1 Hydrlgy & Hydraulics Bureau and Interagency Mdeling Center Reginal Simulatin Mdel Basins (RSMBN) Lake Okeechbee Watershed Prject 2016 Existing Cnditins Baseline (ECB) Table f Assumptins Climate The climatic perid f recrd is frm 1965 t 2005 Rainfall estimates have been revised and updated fr Revised evaptranspiratin methds have been used fr Tpgraphy The Tpgraphy dataset fr RSM was Updated in 2009 using the fllwing datasets: Suth Flrida Digital Elevatin Mdel, USACE, 2004 High Accuracy Elevatin Data, US Gelgical Survey 2007 Lxahatchee River LiDAR Study, Dewberry and Davis, 2004 St. Lucie Nrth Frk LiDAR, Dewberry and Davis, 2007 Palm Beach Cunty LiDAR Survey, Dewberry and Davis, 2004 Strmwater Treatment Area stage-strage-area relatinships based n G. Gfrth spreadsheets. Land Use Lake Okeechbee Service Area (LOSA) Basins were updated using cnsumptive use permit infrmatin as f 2/21/12, as reflected in the LOSA Ledger prduced by the Water Use Bureau C-43 Grundwater irrigated basins Permitted as f 2010, the dataset was updated using land use, aerial imagery and 2010 cnsumptive use permit infrmatin Dminant land use in EAA is sugar cane ther land uses cnsist f shrub land, wet land, ridge and slugh, and sawgrass LOSA Basins Lwer Istkpga, Nrth Lake Shre and Nrtheast Lake Shre demands and runff estimated using the AFSIRS mdel and assumed permitted land use (see land use assumptins rw). Lake Okeechbee Lake Okeechbee Regulatin Schedule 2008 (LORS 2008) Includes Lake Okeechbee regulatry releases t tide via L8/C51 canals Lake Okeechbee regulatry releases limited t 1,550 cfs fr Miami Canal and 1,350 cfs fr Nrth New River Canal based n studies perfrmed by USACE. A reginal hydrlgic surrgate fr the 2010 Adaptive Prtcl peratins utilized. This attempts t mimic desired timing f releases withut estimating salinity criteria Lake Okeechbee Water Shrtage Management (LOWSM) Plan Interim Actin Plan (IAP) fr Lake Okeechbee (under which backpumping t the lake at S-2 and S-3 is t be minimized) Temprary frward pumps as fllws: S cfs S cfs S cfs Page 1 f 6

2 Nrthern Lake Okeechbee Watershed Inflws Calsahatchee River Basin St. Lucie Canal Basin Seminle Brightn Reservatin All pumps reduce t the abve capacities when Lake Okeechbee stage falls belw 10.2 ft and turn ff when stages recver t greater than 11.2 ft. N reductin in EAA runff assciated with the implementatin f Best Management Practices (BMPs); N BMP makeup water deliveries t the WCAs Operatinal intent is t treat LOK regulatry releases t the suth thrugh STA-3/4 and A1 FEB (nline as f July 2015). Backpumping f 298 Districts and 715 Farms int lake minimized Kissimmee River inflws based n interim schedule fr Kissimmee Chain f Lakes using the UKISS mdel Restred reaches / pls f Kissimmee River as f 2016 Fisheating Creek, Istkpga & Taylr Creek / Nubbin Slugh Basin Inflws calculated frm histrical runff estimates. Calsahatchee River Basin irrigatin demands and runff estimated using the AFSIRS mdel and assumed permitted land use as f February 2012 (see land use assumptins rw). Public water supply daily intake frm the river is included in the analysis. St. Lucie Canal Basin demands estimated using the AFSIRS mdel and assumed permitted land use as f February 2012(see land use assumptins rw). Excess C-44 basin runff is allwed t backflw int the Lake if the lake stage is 0.25 ft belw the Zne D pulse release line. Basin demands include the Flrida Pwer & Light reservir at Indiantwn. Indian River Lagn Suth Prject features As-built Ten-mile Creek Reservir and STA: 1316 acre-feet maximum strage capacity at 2 maximum perating depth n 658 acre effective ftprint; receives excess water frm Nrth Flk Basin; peratins per TMC Preliminary Operating Plan (SFWMD, June 2015) Brightn reservatin demands were estimated using AFSIRS methd based n existing planted acreage The 2-in10 demand set frth in the Seminle Cmpact Wrk plan equals 2,262 MGM (millin gallns per mnth). AFSIRS mdeled 2-in-10 demands equaled 2,383 MGM While estimated demands, and therefre deliveries, fr every mnth f simulatin d nt equate t mnthly entitlement quantities as per Table 7, Agreement (Nv. 1992), tribal rights t these quantities are preserved LOWSM applies t this agreement Page 2 f 6

3 Seminle Big Cypress Reservatin Everglades Agricultural Area Strmwater Treatment Areas Big Cypress Reservatin irrigatin demands and runff were estimated using the AFSIRS methd based n existing planted acreage The 2-in-10 demand set frth in the Seminle Cmpact Wrk Plan equals 2,606 MGM AFSIRS mdeled 2-in-10 demands equaled 2,659 MGM While estimated demands, and therefre deliveries, fr every mnth f simulatin d nt equate t mnthly entitlement quantities as per the District s Final Order and Tribe s Reslutin establishing the Big Cypress Reservatin entitlement, tribal rights t these quantities are preserved LOWSM applies t this agreement Mdel water-bdy cmpnents as shwn in Figure 1. Simulated runff frm the Nrth New River Hillsbr basin apprtined based n the relative size f cntributing basins via S7 rute vs. S6 rute. G-341 rutes water frm S-5A Basin t Hillsbr Basin. RSMBN ECB EAA runff and irrigatin demand cmpared t SFWMM ECB simulated runff and demand frm fr reasnability. STAs are simulated as single waterbdies STA-1E: 6,546 acres ttal area STA-1W: 7,488 acres ttal area S-5A Basin runff is t be treated in STA-1W first and when cnveyance capacities are exceeded, reruted t STA-1E STA-2: cells 1,2 & 3: 7,681 acres ttal area STA-2N: cells 4,5 & 6; refers t Cmp B-Nrth; 6,531 acres ttal area STA-2S: cells 7 & 8; refers t Cmp B-Suth; 3,570 acres ttal area STA-3/4: 17,126 acres ttal area STA-5N: includes cells 1 & 2: 5,081 acres ttal area STA-5S: includes cells 3, 4 & 5; uses ftprint f Cmpartment C: 8,469 acres ttal area STA-6: expanded with phase 2: 3,054 acres ttal area Assumed peratins f STAs: 0.5 ft minimum depth belw which supply frm external surces is triggered 4 ft maximum depth abve which inflws are discntinued Inflw targets established fr STA-3/4, STA-2N and STA-2S based n DMSTA simulatin; met frm lcal basin runff, LOK regulatry discharge and available A1FEB strage. STA-3/4 receives Lake Okeechbee regulatin target releases apprximately at 60,000 acre-feet annual average fr the entire perid f recrd. A 15,853-acre Flw Equalizatin Basin (FEB) lcated nrth f STA- 3/4 with assumed peratins as fllws: Page 3 f 6

4 Hley Land Wildlife Management Area Rtenberger Wildlife Management Area Public Water Supply and Irrigatin FEB inflws are frm excess EAA basin runff abve the established inflw targets at STA-3/4, STA-2N, and STA-2S, and frm LOK fld releases suth. FEB utflws are used t help meet established inflw targets (as estimated using the Dynamic Mdel fr Strmwater Treatment Areas) at STA-3/4, STA-2N, and STA-2S if EAA basin runff and LOK regulatry discharge are nt sufficient. 0.5 ft minimum depth belw which n releases are allwed 3.8 ft maximum depth abve which inflws are discntinued Assumed inlet pump frm STA-3/4 supply canal with capacity equal t cmbined capacity f G-372 and G-370 structures. Outflw weirs, with similar discharge characteristics as STA-3/4 utlet structure, discharging int lwer Nrth New River canal. Structure capacities and water quality perating rules are cnsistent with mdeling assumptins assumed during the A-1 FEB EIS applicatin prcess. S200A inflw structure perated t send lwer Miami canal water int Hley Land. G-372HL inflw structure fr fire prtectin used fr keeping the water table frm ging lwer than half a ft belw land surface elevatin. Operatins are per the Hley Land Wildlife Management Area Draft Prject Operatins Manual (SFWMD, Octber 2015) Operatinal Schedule as defined in the Operatin Plan fr Rtenberger WMA (SFWMD, March 2010) Reginal water supply demands t maintain Lwer East Cast canals as simulated frm RSMGL ECB. Western Basins C139 RSM basin is being mdeled. Perid is C139 basin runff is mdeled as fllws: G136 flws is ruted t Miami Canal; G342A-D flws ruted t STA5; G406 flws ruted t STA6 C139 basin demand is met primarily by lcal grundwater C139 Annex flws ruted t L28. Water Shrtage Rules Reflects the existing water shrtage plicies as in Suth Flrida Water Management District Chapters 40E-21 and 40E-22, FAC, including Lake Okeechbee Water Shrtage Management (LOWSM) Plan. Page 4 f 6

5 Water-Bdy Cmpnents: Miami Water-Bdy = S3 + S8 + A-2W NNR/HILLS Water-Bdy = S2 + S6 + S7 + A-2E + New Hpe Suth WPB Water-Bdy = S-5A A1FEB = A-1 -- Nde Link diagram t be used as MSE Netwrk -- Fig. 1 RSMBSN Basin Definitin within the EAA: 2016 Existing Cnditin Simulatin Page 5 f 6

6 Fig. 2 RSMBSN Link-Nde Ruting Diagram: 2016 Existing Cnditin Simulatin Ntes: The RSM is a rbust and cmplex reginal scale mdel. Due t the scale f the mdel, it is frequently necessary t implement abstractins f system infrastructure and peratins that will, in general, mimic the intent and result f the desired prject features while nt matching the exact mechanism by which these results wuld be btained in the real wrld. Additinally, it is smetimes necessary t wrk within established paradigms and fundatins within the mdel cde (e.g. use available input-driven ptins t represent mre cmplex prject peratins). The bundary cnditins alng the eastern and suthern bundaries f the RSMBN mdel were prvided frm either the Suth Flrida Water Management Mdel (SFWMM) r the RSM Glades-LECSA Mdel (RSMGL). The SFWMM was the surce f the eastern bundary grundwater/surface water flws, while the RSMGL was the surce f the suthern bundary structural flws. Page 6 f 6