U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 28 DEC 2008 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 14.04 10.28 12.11 (Official Elv) Bottom of High Lake Mngmt= 17.25 Top of Water Short Mngmt= 12.18 Currently in Operational Management Band 28DEC (1965-2007) Period of Record Average 14.65 Difference from POR Average -0.61 Simulated Average LORS2008 [1965-2000] 13.52 Difference from Average LORS2008 0.52 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 7.98' Route 2 ÷ 5.38' Bridge Clearance = 49.51' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 13.94 14.07 14.05 14.10 14.15 14.26 14.06 14.04 *Combination Okeechobee Avg-Daily Lake Average = 14.08 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 13.94 14.07 14.05 14.10 *Interior Okeechobee Avg-Daily Lake Average = 14.04 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 14.13 14.15 14.19 14.11 14.26 14.06 13.97 14.04 14.03 14.03 *Edge Okeechobee Avg-Daily Lake Average = 14.10 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 165 S191 0 Fisheating Cr 14 S154 0 S133 Pumps -NR- S135 Pumps 0 S84 0 S127 Pumps 0 S2 Pumps 0 S71 218 S129 Pumps 0 S3 Pumps 0 S72 0 S131 Pumps 0 S4 Pumps 0 Total Inflows: 397 Okeechobee Outflows (cfs): S135 Culverts 0 S354 176 S77 391 S127 Culverts 0 S351 96 S308 0 S129 Culverts 0 S352 51 S131 Culverts L8 Canal Pt 253 C5 -NR- Total Outflows: 968 Okeechobee Pan Evaporation (inches): S77 0.11 S308 0.11 Average Pan Evap x 0.75 Pan Coefficient = 0.08" = 0.01' Lake Average Precipitation using NEXRAD: = 0.00" = 0.00' Evaporation - Precipitation: = 0.08" = 0.01' Evaporation - Precipitation using Lake Area of 730 square miles is equal to 1619 cfs out of the lake. Lake Okeechobee (Change in Storage) Flow is -2118 cfs or -4200 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: 13.72 14.05 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 19.52 14.04 0 0.0 0.0 0.0 S135 Pumps: 13.37 13.97 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 20.89 13.86 165 0.0 0.0 0.0 0.0 0.0 0.0 S127 Pumps: 13.46 14.03 0 0 0 0 0 0 (cfs) S127 Culvert: 0 0.0 S129 Pumps: 13.39 14.03 0 0 0 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 13.18 14.17 0 0 0 (cfs) S131 Culvert: Fisheating Creek nr Palmdale 28.61 14 nr Lakeport ______ C5: ______ 14.13 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 11.21 14.13 0 0 0 0 (cfs) S169: 14.15 11.38 0 0.0 0.0 0.0 S310: ______ -NR- S3 Pumps: 10.66 14.19 0 0 0 0 (cfs) S354: 14.19 10.66 176 0.4 0.6 S2 Pumps: 10.52 14.12 0 0 0 0 0 (cfs) S351: 14.12 10.52 96 0.2 0.1 0.2 S352: 14.26 10.72 51 0.2 0.0 C10A: -NR- 13.94 -NR- -NR- 7.0 -NR- -NR- L8 Canal PT 14.03 253 _________________________________________________________________________ Temporary Pumps S351: 10.52 14.12 96 -NR--NR--NR--NR--NR--NR- S352: 10.72 14.26 51 -NR--NR--NR--NR- S354: 10.66 14.19 176 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 13.91 11.35 0.0 0.0 S47D: 11.32 10.97 0 0.0 S77: Spillway and Sector Flow: 14.02 11.12 384 0.5 0.5 0.5 0.5 Flow Due to Lockages+: 7 S77 Below USGS Flow Gage 546 (TESTING) S78: Spillway and Sector Flow: 10.95 3.14 317 0.0 0.5 0.5 0.0 Flow Due to Lockages+: 15 S79: Spillway and Sector Flow: 3.09 0.81 660 0.0 0.2 0.5 0.5 0.5 0.5 0.0 0.0 Flow Due to Lockages+: 12 Percent of flow from S77 58% Chloride (ppm) 72 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 14.05 13.99 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 0 S308 Below USGS Flow Gage 137 S153: 18.98 13.84 14 0.0 0.5 S80: Spillway and Sector Flow: 14.09 0.18 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 29 Percent of flow from S308 -NR-% Steele Point Top Salinity (mg/ml) 29 Steele Point Bottom Salinity (mg/ml) 28 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 0.00 S131 Pump Station: -NR- 0.00 0.00 S77: 0.00 0.00 0.00 360 0 S78: 0.01 0.01 0.14 64 0 S79: 0.00 0.00 0.04 212 0 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 0.00 S308: 0.00 0.00 0.25 68 0 S80: 0.00 0.00 1.22 25 0 Okeechobee Average 0.00 0.00 0.02 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 28 DEC 2008 14.04 Difference from 28DEC08 28DEC08 -1 Day = 27 DEC 2008 14.05 0.01 28DEC08 -2 Days = 26 DEC 2008 14.06 0.02 28DEC08 -3 Days = 25 DEC 2008 14.06 0.02 28DEC08 -4 Days = 24 DEC 2008 14.06 0.02 28DEC08 -5 Days = 23 DEC 2008 14.07 0.03 28DEC08 -6 Days = 22 DEC 2008 14.07 0.03 28DEC08 -7 Days = 21 DEC 2008 14.12 0.08 28DEC08 -30 Days = 28 NOV 2008 14.26 0.22 28DEC08 -1 Year = 28 DEC 2007 10.28 -3.76 28DEC08 -2 Year = 28 DEC 2006 12.11 -1.93 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 1.94 ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 28DEC08 Today = 28 DEC 2008 -189 MON | -1157 28DEC08 -1 Day = 27 DEC 2008 -51 SUN | -1243 28DEC08 -2 Days = 26 DEC 2008 148 SAT | -NR- 28DEC08 -3 Days = 25 DEC 2008 488 FRI | 922 28DEC08 -4 Days = 24 DEC 2008 1091 THU | -413 28DEC08 -5 Days = 23 DEC 2008 1342 WED | 1652 28DEC08 -6 Days = 22 DEC 2008 1329 TUE | -NR- 28DEC08 -7 Days = 21 DEC 2008 736 MON | -NR- 28DEC08 -8 Days = 20 DEC 2008 -31 SUN | 1044 28DEC08 -9 Days = 19 DEC 2008 -208 SAT | -1267 28DEC08 -10 Days = 18 DEC 2008 241 FRI | -NR- 28DEC08 -11 Days = 17 DEC 2008 266 THU | -1051 28DEC08 -12 Days = 16 DEC 2008 430 WED | -NR- 28DEC08 -13 Days = 15 DEC 2008 93 TUE | -NR- ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 28DEC08 Today= 28 DEC 2008 167 MON | 165 28DEC08 -1 Day = 27 DEC 2008 180 SUN | 112 28DEC08 -2 Days = 26 DEC 2008 199 SAT | 106 28DEC08 -3 Days = 25 DEC 2008 211 FRI | 175 28DEC08 -4 Days = 24 DEC 2008 216 THU | 91 28DEC08 -5 Days = 23 DEC 2008 216 WED | 125 28DEC08 -6 Days = 22 DEC 2008 221 TUE | 103 28DEC08 -7 Days = 21 DEC 2008 226 MON | 14 28DEC08 -8 Days = 20 DEC 2008 236 SUN | 97 28DEC08 -9 Days = 19 DEC 2008 238 SAT | 308 28DEC08 -10 Days = 18 DEC 2008 235 FRI | 260 28DEC08 -11 Days = 17 DEC 2008 234 THU | 306 28DEC08 -12 Days = 16 DEC 2008 223 WED | 190 28DEC08 -13 Days = 15 DEC 2008 227 TUE | 292 ______________________________________________________________________________ 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) 28 DEC 2008 450 776 373 658 271 1 27 DEC 2008 454 773 374 651 250 -0 26 DEC 2008 467 906 373 722 166 -NR- 25 DEC 2008 717 1218 538 913 -9 -24 24 DEC 2008 725 1162 542 835 742 448 23 DEC 2008 559 913 458 736 645 349 22 DEC 2008 495 860 395 756 -49 -2 21 DEC 2008 570 1008 539 933 -100 123 20 DEC 2008 626 994 541 930 17 210 19 DEC 2008 342 672 417 783 206 167 18 DEC 2008 320 617 326 647 279 206 17 DEC 2008 264 453 180 480 358 238 16 DEC 2008 45 95 324 649 -NR- 330 15 DEC 2008 0 7 272 361 -NR- -NR- 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) 28 DEC 2008 1333 -NR- 190 101 349 502 27 DEC 2008 1352 -NR- 139 139 214 482 26 DEC 2008 1249 -NR- 141 167 93 460 25 DEC 2008 1250 -NR- 0 125 26 492 24 DEC 2008 1189 -NR- 759 105 410 495 23 DEC 2008 1327 -NR- 982 178 420 441 22 DEC 2008 1451 -NR- -NR- 270 286 484 21 DEC 2008 1437 -NR- -NR- 103 204 532 20 DEC 2008 1394 -NR- 0 151 204 522 19 DEC 2008 1235 -NR- 0 254 202 506 18 DEC 2008 1382 -NR- 234 147 200 -NR- 17 DEC 2008 1182 -NR- 708 107 204 510 16 DEC 2008 1372 -NR- -NR- -NR- -NR- -NR- 15 DEC 2008 1509 -NR- -NR- -NR- -NR- -NR- *** 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 29DEC2008 @ 15:15 ** Preliminary Data - Subject to Revision **