U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 07 DEC 2008 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 14.18 10.19 12.15 (Official Elv) Bottom of High Lake Mngmt= 17.25 Top of Water Short Mngmt= 12.35 Currently in Operational Management Band 07DEC (1965-2007) Period of Record Average 14.76 Difference from POR Average -0.57 Simulated Average LORS2008 [1965-2000] 13.69 Difference from Average LORS2008 0.49 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 8.12' Route 2 ÷ 5.52' Bridge Clearance = 49.40' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 13.99 14.17 14.24 14.32 14.34 14.47 14.18 14.05 *Combination Okeechobee Avg-Daily Lake Average = 14.22 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 13.99 14.17 14.24 14.32 *Interior Okeechobee Avg-Daily Lake Average = 14.18 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 14.18 14.34 14.47 14.37 14.47 14.18 14.07 14.05 14.09 14.07 *Edge Okeechobee Avg-Daily Lake Average = 14.23 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 148 S191 0 Fisheating Cr 12 S154 0 S133 Pumps -NR- S135 Pumps 0 S84 0 S127 Pumps 0 S2 Pumps -NR- S71 0 S129 Pumps -NR- S3 Pumps 0 S72 0 S131 Pumps 0 S4 Pumps 0 Total Inflows: 160 Okeechobee Outflows (cfs): S135 Culverts 0 S354 253 S77 151 S127 Culverts 0 S351 469 S308 87 S129 Culverts 0 S352 56 S131 Culverts L8 Canal Pt 39 C5 -NR- Total Outflows: 1055 Okeechobee Pan Evaporation (inches): S77 0.18 S308 0.19 Average Pan Evap x 0.75 Pan Coefficient = 0.14" = 0.01' Lake Average Precipitation using NEXRAD: = 0.00" = 0.00' Evaporation - Precipitation: = 0.14" = 0.01' Evaporation - Precipitation using Lake Area of 730 square miles is equal to 2724 cfs out of the lake. Lake Okeechobee (Change in Storage) Flow is -6453 cfs or -12800 AC-FT ______________________________________________________________________________ ______________________________________________________________________________ Note: Headwater, tailwater, and stage values below are instantaneous values unless otherwise specified. Headwater Tailwater ----------- Gate Positions ------------ Elevation Elevation Disch #1 #2 #3 #4 #5 #6 #7 #8 (ft-msl) (ft-msl) (cfs) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (I) see note at bottom North East Shore S133 Pumps: 13.88 13.98 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 19.44 14.00 0 0.0 0.0 0.0 S135 Pumps: 13.52 14.00 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 21.04 13.89 148 0.0 0.0 0.1 0.0 0.0 0.1 S127 Pumps: 13.41 14.01 0 0 0 0 0 0 (cfs) S127 Culvert: 0 0.0 S129 Pumps: 13.48 14.09 -NR- 0 0 -NR- (cfs) S129 Culvert: 0 0.0 S131 Pumps: 13.37 14.34 0 0 0 (cfs) S131 Culvert: Fisheating Creek nr Palmdale 28.44 12 nr Lakeport ______ C5: ______ 14.18 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 11.27 14.43 0 0 0 0 (cfs) S169: 14.41 11.48 174 1.0 1.0 1.0 S310: ______ -NR- S3 Pumps: 11.46 14.53 0 0 0 0 (cfs) S354: 14.53 11.46 253 0.2 0.2 S2 Pumps: 11.39 14.47 -NR- 0 0 0 -NR- (cfs) S351: 14.47 11.39 469 0.8 0.6 0.7 S352: 14.48 11.15 56 0.2 0.0 C10A: -NR- 14.12 -NR- -NR- 7.0 -NR- -NR- L8 Canal PT 14.21 39 _________________________________________________________________________ Temporary Pumps S351: 11.39 14.47 469 -NR--NR--NR--NR--NR--NR- S352: 11.15 14.48 56 -NR--NR--NR--NR- S354: 11.46 14.53 253 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 14.16 12.30 0.0 0.0 S47D: 12.31 10.84 0 0.0 S77: Spillway and Sector Flow: 14.31 10.99 146 0.0 0.0 0.5 0.0 Flow Due to Lockages+: 5 S77 Below USGS Flow Gage 144 (TESTING) S78: Spillway and Sector Flow: 10.87 3.33 169 0.0 0.0 0.5 0.0 Flow Due to Lockages+: 29 S79: Spillway and Sector Flow: 3.27 0.78 474 0.0 0.0 0.0 0.5 0.5 0.5 0.0 0.0 Flow Due to Lockages+: 13 Percent of flow from S77 31% Chloride (ppm) 59 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 14.16 14.10 87 4.5 4.5 4.5 0.0 Flow Due to Lockages+: 0 S308 Below USGS Flow Gage 298 S153: 18.92 13.98 0 0.0 0.0 S80: Spillway and Sector Flow: 14.09 -0.16 213 0.0 0.0 0.0 0.0 0.4 0.0 0.0 Flow Due to Lockages+: 20 Percent of flow from S308 41% Steele Point Top Salinity (mg/ml) -N Steele Point Bottom Salinity (mg/ml) -N Speedy Point Top Salinity (mg/ml) -N Speedy Point Bottom Salinity (mg/ml) -N + Flow Due to lockages is computed utilizing average daily headwater and tailwater along with total number of lockages for the day to calculate a volume which is then converted to an average discharge in cfs. ______________________________________________________________________________ ----- Wind ---- Daily Precipitation Totals 1-Day 3-Day 7-Day Direction Speed (inches) (inches) (inches) (Degų) (mph) S133 Pump Station: 0.00 0.00 0.02 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: 0.00 0.00 0.04 S135 Pump Station: 0.00 0.00 0.02 S127 Pump Station: 0.00 0.00 0.03 S129 Pump Station: 0.00 0.00 0.03 S131 Pump Station: 0.00 0.00 0.04 S77: 0.00 0.00 0.00 237 5 S78: 0.00 0.00 0.02 65 3 S79: 0.00 0.01 0.08 37 4 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: 0.00 0.00 0.01 S3 Pump Station: 0.00 0.00 0.02 S2 Pump Station: 0.00 0.00 0.03 S308: 0.00 0.00 0.02 326 4 S80: 0.00 0.00 0.03 2 5 Okeechobee Average 0.00 0.00 0.02 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 07 DEC 2008 14.18 Difference from 07DEC08 07DEC08 -1 Day = 06 DEC 2008 14.21 0.03 07DEC08 -2 Days = 05 DEC 2008 14.22 0.04 07DEC08 -3 Days = 04 DEC 2008 14.22 0.04 07DEC08 -4 Days = 03 DEC 2008 14.23 0.05 07DEC08 -5 Days = 02 DEC 2008 14.25 0.07 07DEC08 -6 Days = 01 DEC 2008 14.28 0.10 07DEC08 -7 Days = 30 NOV 2008 14.27 0.09 07DEC08 -30 Days = 07 NOV 2008 14.70 0.52 07DEC08 -1 Year = 07 DEC 2007 10.19 -3.99 07DEC08 -2 Year = 07 DEC 2006 12.15 -2.03 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 2.25 ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 07DEC08 Today = 07 DEC 2008 -309 MON | -5403 07DEC08 -1 Day = 06 DEC 2008 308 SUN | -373 07DEC08 -2 Days = 05 DEC 2008 -459 SAT | 2327 07DEC08 -3 Days = 04 DEC 2008 -899 FRI | 467 07DEC08 -4 Days = 03 DEC 2008 -540 THU | -NR- 07DEC08 -5 Days = 02 DEC 2008 -1370 WED | -4728 07DEC08 -6 Days = 01 DEC 2008 -1365 TUE | 2961 07DEC08 -7 Days = 30 NOV 2008 -2221 MON | 5191 07DEC08 -8 Days = 29 NOV 2008 -3619 SUN | -246 07DEC08 -9 Days = 28 NOV 2008 -3879 SAT | -NR- 07DEC08 -10 Days = 27 NOV 2008 -3661 FRI | -NR- 07DEC08 -11 Days = 26 NOV 2008 -3311 THU | -5567 07DEC08 -12 Days = 25 NOV 2008 -2652 WED | 2606 07DEC08 -13 Days = 24 NOV 2008 -3041 TUE | -635 ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 07DEC08 Today= 07 DEC 2008 157 MON | 148 07DEC08 -1 Day = 06 DEC 2008 154 SUN | 123 07DEC08 -2 Days = 05 DEC 2008 156 SAT | 255 07DEC08 -3 Days = 04 DEC 2008 146 FRI | 235 07DEC08 -4 Days = 03 DEC 2008 136 THU | 154 07DEC08 -5 Days = 02 DEC 2008 135 WED | 249 07DEC08 -6 Days = 01 DEC 2008 126 TUE | 145 07DEC08 -7 Days = 30 NOV 2008 136 MON | 208 07DEC08 -8 Days = 29 NOV 2008 140 SUN | 94 07DEC08 -9 Days = 28 NOV 2008 154 SAT | 214 07DEC08 -10 Days = 27 NOV 2008 163 FRI | 96 07DEC08 -11 Days = 26 NOV 2008 175 THU | 95 07DEC08 -12 Days = 25 NOV 2008 194 WED | 100 07DEC08 -13 Days = 24 NOV 2008 196 TUE | 84 ______________________________________________________________________________ Lake Okeechobee Outlets Last 14 Days S-77 S-77 S-78 S-78 Below S308 S-308 Discharge Discharge Discharge Discharge Discharge Discharge (0700-2100) (ALL DAY) (0700-2100) (ALL DAY) (ALL DAY) (ALL DAY) DATE (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) 07 DEC 2008 155 299 199 392 591 173 06 DEC 2008 472 879 327 571 878 345 05 DEC 2008 719 1054 367 636 952 286 04 DEC 2008 227 365 288 482 1105 357 03 DEC 2008 118 206 202 364 1127 -NR- 02 DEC 2008 114 199 374 635 942 1357 01 DEC 2008 22 49 87 181 357 -NR- 30 NOV 2008 632 977 190 380 755 137 29 NOV 2008 721 1228 371 676 904 851 28 NOV 2008 640 1241 328 660 875 1208 27 NOV 2008 535 1298 327 640 702 1125 26 NOV 2008 912 1758 270 -NR- 1105 1303 25 NOV 2008 929 1461 320 630 1277 1119 24 NOV 2008 215 415 325 653 1401 1381 S-79 S-310 S-351 S-352 S-354 L8 Canal Pt Discharge Discharge Discharge Discharge Discharge Discharge (ALL DAY) (ALL DAY) (ALL DAY) (ALL DAY) (ALL DAY) (ALL DAY) DATE (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) 07 DEC 2008 966 -NR- 930 111 502 78 06 DEC 2008 919 -NR- 1110 288 537 311 05 DEC 2008 922 -NR- 1301 783 815 387 04 DEC 2008 938 -NR- 2042 351 1523 495 03 DEC 2008 1030 -NR- 1136 301 1454 430 02 DEC 2008 927 -NR- 178 436 559 499 01 DEC 2008 961 -NR- 0 103 0 413 30 NOV 2008 1075 -NR- 28 321 151 284 29 NOV 2008 818 -NR- 155 615 422 452 28 NOV 2008 826 -NR- 337 724 -NR- 486 27 NOV 2008 838 -NR- 549 1108 -NR- 536 26 NOV 2008 857 -NR- 769 1154 442 336 25 NOV 2008 805 -NR- 714 993 349 541 24 NOV 2008 876 -NR- 143 486 0 522 *** NOTE: 1) Discharge from (0700-2100) is computed using Spillway and Sector Gate Discharges from 0700 hrs to 2100 hrs. 2) Discharge (ALL DAY) is computed using Spillway, Sector Gate and Lockages Discharges from 0015 hrs to 2400 hrs. ______________________________________________________________________________ (I) - Flows preceeded by "I" signify an instantaneous flow computed from the single value reported for the day ______________________________________________________________________________ * As of 11 May 1999, Lake Okeechobee Elevation was switched from Instantaneous 2400 value to an average-daily lake average. On 14 Mar 2001, due to the isolation of various gages within the standard 10 stations, we began using the average of the interior 4 station gages as the official Lake Okeechobee Elevation. * On 16 April 2007, Lake Okeechobee Elevation was switched to a 8 gage mixture of interior and exterior gages due to wind effects on Lake O (When the 4 station gages are not working the 10 station elevation is used) Today Lake Okechobee elevation is determined from the 4 interior stations ++ For more information see the Jacksonville District Navigation website at http://www.saj.usace.army.mil/hydroSurvey/hydro.htm $ For information regarding Lake Okeechobee Service Area water restrictions please refer to www.sfwmd.gov ______________________________________________________________________________ Report Generated 08DEC2008 @ 14:15 ** Preliminary Data - Subject to Revision **