U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 30 NOV 2008 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 14.27 10.27 12.26 (Official Elv) Bottom of High Lake Mngmt= 17.25 Top of Water Short Mngmt= 12.40 Currently in Operational Management Band 30NOV (1965-2007) Period of Record Average 14.83 Difference from POR Average -0.56 Simulated Average LORS2008 [1965-2000] 13.77 Difference from Average LORS2008 0.51 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 8.21' Route 2 ÷ 5.61' Bridge Clearance = 49.21' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 14.30 14.25 14.22 14.30 14.19 14.49 14.27 14.44 *Combination Okeechobee Avg-Daily Lake Average = 14.31 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 14.30 14.25 14.22 14.30 *Interior Okeechobee Avg-Daily Lake Average = 14.27 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 14.25 14.19 14.19 14.13 14.49 14.27 14.35 14.44 14.37 14.30 *Edge Okeechobee Avg-Daily Lake Average = 14.30 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 210 S191 77 Fisheating Cr 0 S154 0 S133 Pumps -NR- S135 Pumps 0 S84 0 S127 Pumps 0 S2 Pumps 0 S71 111 S129 Pumps 0 S3 Pumps 0 S72 0 S131 Pumps 0 S4 Pumps 0 Total Inflows: 398 Okeechobee Outflows (cfs): S135 Culverts 0 S354 76 S77 493 S127 Culverts 0 S351 14 S308 69 S129 Culverts 0 S352 162 S131 Culverts L8 Canal Pt 143 C5 -NR- Total Outflows: 957 Okeechobee Pan Evaporation (inches): S77 0.09 S308 0.13 Average Pan Evap x 0.75 Pan Coefficient = 0.08" = 0.01' Lake Average Precipitation using NEXRAD: = 0.66" = 0.06' Evaporation - Precipitation: = -0.58" = -0.05' Evaporation - Precipitation using Lake Area of 730 square miles is equal to 11336 cfs into the lake. Lake Okeechobee (Change in Storage) Flow is 4235 cfs or 8400 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: 14.04 14.14 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 19.28 14.16 77 0.0 0.0 0.0 S135 Pumps: 13.55 14.20 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 20.96 13.75 210 0.0 0.0 0.0 0.0 0.0 0.0 S127 Pumps: 13.46 14.39 0 0 0 0 0 0 (cfs) S127 Culvert: 0 0.0 S129 Pumps: 13.48 14.25 0 0 0 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 13.47 14.32 0 0 0 (cfs) S131 Culvert: Fisheating Creek nr Palmdale 27.09 0 nr Lakeport ______ C5: ______ 14.25 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 11.30 14.27 0 0 0 0 (cfs) S169: 14.43 11.47 88 0.5 0.5 0.0 S310: ______ -NR- S3 Pumps: 10.73 14.44 0 0 0 0 (cfs) S354: 14.44 10.73 76 0.0 0.0 S2 Pumps: 10.89 14.26 0 0 0 0 0 (cfs) S351: 14.26 10.89 14 0.0 0.0 0.0 S352: 14.46 10.96 162 0.2 0.0 C10A: -NR- 14.22 -NR- -NR- 7.0 -NR- -NR- L8 Canal PT 14.25 143 _________________________________________________________________________ Temporary Pumps S351: 10.89 14.26 14 -NR--NR--NR--NR--NR--NR- S352: 10.96 14.46 162 -NR--NR--NR--NR- S354: 10.73 14.44 76 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 14.08 12.09 0.0 0.0 S47D: 12.12 11.11 0 0.0 S77: Spillway and Sector Flow: 14.13 11.26 492 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 1 S77 Below USGS Flow Gage 450 (TESTING) S78: Spillway and Sector Flow: 11.16 3.21 185 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 7 S79: Spillway and Sector Flow: 3.13 1.49 538 0.0 0.0 0.5 0.5 0.5 0.5 0.5 0.0 Flow Due to Lockages+: 4 Percent of flow from S77 91% Chloride (ppm) 54 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 14.19 14.29 69 0.0 0.0 0.0 0.0 Flow Due to Lockages+: -0 S308 Below USGS Flow Gage 381 S153: 18.98 14.16 0 0.0 0.0 S80: Spillway and Sector Flow: 14.70 0.72 214 0.0 0.0 0.4 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 20 Percent of flow from S308 32% Steele Point Top Salinity (mg/ml) 29 Steele Point Bottom Salinity (mg/ml) 26 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: -NR- 0.00 0.00 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: -NR- 0.00 0.00 S135 Pump Station: -NR- 0.00 0.00 S127 Pump Station: -NR- 0.00 0.00 S129 Pump Station: -NR- 0.00 0.01 S131 Pump Station: -NR- 0.02 0.02 S77: 0.00 0.00 0.00 360 0 S78: 1.87 1.87 1.87 27 4 S79: 0.28 0.28 0.28 205 4 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: -NR- 0.00 0.00 S3 Pump Station: -NR- 0.00 0.00 S2 Pump Station: -NR- 0.00 0.01 S308: 0.00 0.00 0.00 25 0 S80: 0.51 0.51 0.51 55 3 Okeechobee Average 0.00 0.00 0.00 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 30 NOV 2008 14.27 Difference from 30NOV08 30NOV08 -1 Day = 29 NOV 2008 14.25 -0.02 30NOV08 -2 Days = 28 NOV 2008 14.26 -0.01 30NOV08 -3 Days = 27 NOV 2008 14.28 0.01 30NOV08 -4 Days = 26 NOV 2008 14.29 0.02 30NOV08 -5 Days = 25 NOV 2008 14.33 0.06 30NOV08 -6 Days = 24 NOV 2008 14.33 0.06 30NOV08 -7 Days = 23 NOV 2008 14.34 0.07 30NOV08 -30 Days = 31 OCT 2008 14.76 0.49 30NOV08 -1 Year = 30 NOV 2007 10.27 -4.00 30NOV08 -2 Year = 30 NOV 2006 12.26 -2.01 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 2.38 ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 30NOV08 Today = 30 NOV 2008 -2221 MON | 5191 30NOV08 -1 Day = 29 NOV 2008 -3619 SUN | -246 30NOV08 -2 Days = 28 NOV 2008 -3879 SAT | -NR- 30NOV08 -3 Days = 27 NOV 2008 -3661 FRI | -NR- 30NOV08 -4 Days = 26 NOV 2008 -3311 THU | -5567 30NOV08 -5 Days = 25 NOV 2008 -2652 WED | 2606 30NOV08 -6 Days = 24 NOV 2008 -3041 TUE | -635 30NOV08 -7 Days = 23 NOV 2008 -3366 MON | 1381 30NOV08 -8 Days = 22 NOV 2008 -3852 SUN | -8805 30NOV08 -9 Days = 21 NOV 2008 -3313 SAT | -2510 30NOV08 -10 Days = 20 NOV 2008 -3222 FRI | 4414 30NOV08 -11 Days = 19 NOV 2008 -3654 THU | -10502 30NOV08 -12 Days = 18 NOV 2008 -2833 WED | -4663 30NOV08 -13 Days = 17 NOV 2008 -2747 TUE | -7312 ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 30NOV08 Today= 30 NOV 2008 138 MON | 210 30NOV08 -1 Day = 29 NOV 2008 142 SUN | 98 30NOV08 -2 Days = 28 NOV 2008 156 SAT | 214 30NOV08 -3 Days = 27 NOV 2008 165 FRI | 102 30NOV08 -4 Days = 26 NOV 2008 177 THU | 111 30NOV08 -5 Days = 25 NOV 2008 195 WED | 106 30NOV08 -6 Days = 24 NOV 2008 196 TUE | 84 30NOV08 -7 Days = 23 NOV 2008 200 MON | 110 30NOV08 -8 Days = 22 NOV 2008 207 SUN | 148 30NOV08 -9 Days = 21 NOV 2008 204 SAT | 106 30NOV08 -10 Days = 20 NOV 2008 211 FRI | 99 30NOV08 -11 Days = 19 NOV 2008 215 THU | 148 30NOV08 -12 Days = 18 NOV 2008 225 WED | 120 30NOV08 -13 Days = 17 NOV 2008 216 TUE | 277 ______________________________________________________________________________ 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) 30 NOV 2008 632 977 190 380 755 137 29 NOV 2008 721 1228 371 676 904 851 28 NOV 2008 729 1241 374 660 875 1208 27 NOV 2008 657 1298 373 640 702 1125 26 NOV 2008 1041 1758 270 -NR- 1105 1303 25 NOV 2008 1060 1461 364 630 1277 1119 24 NOV 2008 244 415 371 653 1401 1381 23 NOV 2008 291 687 377 651 1054 1214 22 NOV 2008 730 1246 379 662 1145 1459 21 NOV 2008 641 1239 330 657 958 1309 20 NOV 2008 660 1291 205 515 1310 -NR- 19 NOV 2008 496 971 322 649 971 2381 18 NOV 2008 435 838 324 642 737 1147 17 NOV 2008 435 841 336 654 1102 973 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) 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 23 NOV 2008 980 -NR- 0 375 0 468 22 NOV 2008 1012 -NR- 0 282 0 563 21 NOV 2008 846 -NR- 26 327 0 628 20 NOV 2008 930 -NR- 40 817 0 604 19 NOV 2008 1035 -NR- 0 1075 0 554 18 NOV 2008 938 -NR- 0 1085 0 586 17 NOV 2008 920 -NR- 0 700 0 591 *** 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 01DEC2008 @ 16:17 ** Preliminary Data - Subject to Revision **