U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 25 JAN 2009 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 13.48 10.09 11.76 (Official Elv) Bottom of High Lake Mngmt= 17.25 Top of Water Short Mngmt= 12.03 Currently in Operational Management Band 25JAN (1965-2007) Period of Record Average 14.69 Difference from POR Average -1.21 Simulated Average LORS2008 [1965-2000] 13.56 Difference from Average LORS2008 -0.08 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 7.42' Route 2 ÷ 4.82' Bridge Clearance = 50.00' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 13.35 13.48 13.48 13.61 13.58 13.70 13.47 13.44 *Combination Okeechobee Avg-Daily Lake Average = 13.51 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 13.35 13.48 13.48 13.61 *Interior Okeechobee Avg-Daily Lake Average = 13.48 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 13.50 13.58 13.63 13.56 13.70 13.47 13.41 13.44 13.41 13.41 *Edge Okeechobee Avg-Daily Lake Average = 13.51 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 73 S191 0 Fisheating Cr -NR- S154 0 S133 Pumps -NR- S135 Pumps 0 S84 0 S127 Pumps 0 S2 Pumps 0 S71 0 S129 Pumps 0 S3 Pumps 0 S72 0 S131 Pumps 0 S4 Pumps 0 Total Inflows: 73 Okeechobee Outflows (cfs): S135 Culverts 0 S354 401 S77 37 S127 Culverts 0 S351 291 S308 -0 S129 Culverts 0 S352 81 S131 Culverts L8 Canal Pt -NR- C5 -NR- Total Outflows: 810 Okeechobee Pan Evaporation (inches): S77 0.11 S308 0.16 Average Pan Evap x 0.75 Pan Coefficient = 0.10" = 0.01' Lake Average Precipitation using NEXRAD: = 0.00" = 0.00' Evaporation - Precipitation: = 0.10" = 0.01' Evaporation - Precipitation using Lake Area of 730 square miles is equal to 1987 cfs out of the lake. Lake Okeechobee (Change in Storage) Flow is -2067 cfs or -4100 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: 13.44 13.46 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 19.38 13.44 0 0.0 0.0 0.0 S135 Pumps: 13.37 13.41 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 20.98 13.35 73 0.0 0.0 0.0 0.0 0.0 0.0 S127 Pumps: 13.33 13.43 0 0 0 0 0 0 (cfs) S127 Culvert: 0 1.1 S129 Pumps: 13.10 13.43 0 0 0 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 13.13 13.58 0 0 0 (cfs) S131 Culvert: Fisheating Creek nr Palmdale ______ -NR- nr Lakeport ______ C5: ______ 13.50 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 11.21 13.57 0 0 0 0 (cfs) S169: 13.57 11.40 0 0.0 0.0 0.0 S310: ______ -NR- S3 Pumps: 11.47 13.60 0 0 0 0 (cfs) S354: 13.60 11.47 401 0.8 0.8 S2 Pumps: 11.35 13.52 0 0 0 0 0 (cfs) S351: 13.52 11.35 291 0.5 0.3 0.5 S352: 13.67 11.17 81 0.3 0.2 C10A: -NR- 13.39 -NR- -NR- 7.0 -NR- -NR- L8 Canal PT ______ -NR- _________________________________________________________________________ Temporary Pumps S351: 11.35 13.52 291 -NR--NR--NR--NR--NR--NR- S352: 11.17 13.67 81 -NR--NR--NR--NR- S354: 11.47 13.60 401 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 13.33 11.85 0.0 0.0 S47D: 11.81 10.97 0 0.0 S77: Spillway and Sector Flow: 13.44 11.13 34 0.0 0.5 0.5 0.0 Flow Due to Lockages+: 3 S77 Below USGS Flow Gage -NR- (TESTING) S78: Spillway and Sector Flow: 11.11 3.24 102 0.0 0.5 0.5 0.0 Flow Due to Lockages+: 15 S79: Spillway and Sector Flow: 3.11 0.58 379 0.0 0.0 0.0 0.5 0.5 0.2 0.0 0.0 Flow Due to Lockages+: 16 Percent of flow from S77 9% Chloride (ppm) 65 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 13.45 13.50 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: -0 S308 Below USGS Flow Gage -27 S153: 18.75 13.38 41 0.0 0.0 S80: Spillway and Sector Flow: 13.62 0.11 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 30 Percent of flow from S308 -NR-% Steele Point Top Salinity (mg/ml) 32 Steele Point Bottom Salinity (mg/ml) 28 Speedy Point Top Salinity (mg/ml) 18 Speedy Point Bottom Salinity (mg/ml) 23 + 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 0.01 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: 0.00 0.00 0.00 S135 Pump Station: 0.00 0.00 0.00 S127 Pump Station: 0.00 0.00 0.01 S129 Pump Station: 0.00 0.00 0.00 S131 Pump Station: 0.00 0.00 0.04 S77: 0.00 0.00 0.00 360 3 S78: 0.00 0.00 0.04 66 2 S79: 0.00 0.00 0.03 298 0 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 0.00 66 4 S80: 0.00 0.00 0.00 22 0 Okeechobee Average 0.00 0.00 0.01 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 25 JAN 2009 13.48 Difference from 25JAN09 25JAN09 -1 Day = 24 JAN 2009 13.49 0.01 25JAN09 -2 Days = 23 JAN 2009 13.49 0.01 25JAN09 -3 Days = 22 JAN 2009 13.51 0.03 25JAN09 -4 Days = 21 JAN 2009 13.53 0.05 25JAN09 -5 Days = 20 JAN 2009 13.58 0.10 25JAN09 -6 Days = 19 JAN 2009 13.64 0.16 25JAN09 -7 Days = 18 JAN 2009 13.64 0.16 25JAN09 -30 Days = 26 DEC 2008 14.06 0.58 25JAN09 -1 Year = 25 JAN 2008 10.09 -3.39 25JAN09 -2 Year = 25 JAN 2007 11.76 -1.72 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = -NR- ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 25JAN09 Today = 25 JAN 2009 -2982 MON | -NR- 25JAN09 -1 Day = 24 JAN 2009 -2904 SUN | -NR- 25JAN09 -2 Days = 23 JAN 2009 -2904 SAT | -NR- 25JAN09 -3 Days = 22 JAN 2009 -2904 FRI | 2 25JAN09 -4 Days = 21 JAN 2009 -3195 THU | -6087 25JAN09 -5 Days = 20 JAN 2009 -2873 WED | -8569 25JAN09 -6 Days = 19 JAN 2009 -2161 TUE | 1868 25JAN09 -7 Days = 18 JAN 2009 -2737 MON | 3395 25JAN09 -8 Days = 17 JAN 2009 -3759 SUN | -1979 25JAN09 -9 Days = 16 JAN 2009 -3890 SAT | -9157 25JAN09 -10 Days = 15 JAN 2009 -2773 FRI | -NR- 25JAN09 -11 Days = 14 JAN 2009 -2667 THU | -6563 25JAN09 -12 Days = 13 JAN 2009 -2009 WED | -2478 25JAN09 -13 Days = 12 JAN 2009 -1984 TUE | -251 ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 25JAN09 Today= 25 JAN 2009 170 MON | 73 25JAN09 -1 Day = 24 JAN 2009 176 SUN | 120 25JAN09 -2 Days = 23 JAN 2009 184 SAT | 147 25JAN09 -3 Days = 22 JAN 2009 181 FRI | 169 25JAN09 -4 Days = 21 JAN 2009 182 THU | 184 25JAN09 -5 Days = 20 JAN 2009 182 WED | 165 25JAN09 -6 Days = 19 JAN 2009 184 TUE | 304 25JAN09 -7 Days = 18 JAN 2009 171 MON | 148 25JAN09 -8 Days = 17 JAN 2009 157 SUN | 133 25JAN09 -9 Days = 16 JAN 2009 149 SAT | 121 25JAN09 -10 Days = 15 JAN 2009 154 FRI | 31 25JAN09 -11 Days = 14 JAN 2009 163 THU | 256 25JAN09 -12 Days = 13 JAN 2009 147 WED | 280 25JAN09 -13 Days = 12 JAN 2009 132 TUE | 255 ______________________________________________________________________________ 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) 25 JAN 2009 28 73 126 232 -54 -0 24 JAN 2009 118 221 0 184 -22 -NR- 23 JAN 2009 290 1259 384 942 101 101 22 JAN 2009 2195 3701 928 -NR- 472 351 21 JAN 2009 2342 4268 1429 -NR- 287 129 20 JAN 2009 2310 3160 1324 1885 697 294 19 JAN 2009 399 689 526 849 94 278 18 JAN 2009 417 712 379 659 98 1 17 JAN 2009 544 1312 379 836 115 48 16 JAN 2009 1278 2455 657 1279 29 85 15 JAN 2009 1252 2152 650 1276 198 -NR- 14 JAN 2009 666 1259 538 -NR- 54 -36 13 JAN 2009 568 1104 438 793 349 332 12 JAN 2009 581 1239 224 -NR- ****** 52 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) 25 JAN 2009 784 -NR- 577 161 795 -NR- 24 JAN 2009 789 -NR- 482 89 851 -NR- 23 JAN 2009 912 -NR- 722 313 38 -NR- 22 JAN 2009 1557 -NR- 2017 809 1116 416 21 JAN 2009 2505 -NR- 2405 347 1380 396 20 JAN 2009 1935 -NR- 2421 284 1648 399 19 JAN 2009 1044 -NR- 1293 244 940 269 18 JAN 2009 1179 -NR- 756 87 660 325 17 JAN 2009 1329 -NR- 1584 173 938 422 16 JAN 2009 1564 -NR- 1789 569 1630 512 15 JAN 2009 1499 -NR- 2255 527 1646 486 14 JAN 2009 1388 -NR- 1362 95 625 482 13 JAN 2009 1181 -NR- 1001 133 412 507 12 JAN 2009 1257 -NR- 1231 268 420 496 *** 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 26JAN2009 @ 15:15 ** Preliminary Data - Subject to Revision **