U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 05 APR 2009 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 12.09 10.32 10.23 (Official Elv) Bottom of High Lake Mngmt= 17.17 Top of Water Short Mngmt= 11.58 Currently in Operational Management Band 05APR (1965-2007) Period of Record Average 14.20 Difference from POR Average -2.11 Simulated Average LORS2008 [1965-2000] 12.95 Difference from Average LORS2008 -0.86 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 6.03' Route 2 ÷ 3.43' Bridge Clearance = 51.41' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 12.00 12.08 12.07 12.21 12.09 12.31 12.09 12.12 *Combination Okeechobee Avg-Daily Lake Average = 12.12 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 12.00 12.08 12.07 12.21 *Interior Okeechobee Avg-Daily Lake Average = 12.09 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 12.07 12.09 12.18 12.12 12.31 12.09 12.03 12.12 12.11 12.23 *Edge Okeechobee Avg-Daily Lake Average = 12.14 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 182 S191 0 Fisheating Cr -NR- S154 -NR- 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: 182 Okeechobee Outflows (cfs): S135 Culverts 0 S354 401 S77 79 S127 Culverts 0 S351 246 S308 114 S129 Culverts 0 S352 92 S131 Culverts L8 Canal Pt -NR- C5 -NR- Total Outflows: 931 Okeechobee Pan Evaporation (inches): S77 0.29 S308 0.24 Average Pan Evap x 0.75 Pan Coefficient = 0.20" = 0.02' Lake Average Precipitation using NEXRAD: = -NR-" = -NR-' Evaporation - Precipitation: = -NR-" = -NR-' Evaporation - Precipitation using Lake Area of 730 square miles is equal to -NR- Lake Okeechobee (Change in Storage) Flow is -3882 cfs or -7700 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: 12.14 12.12 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 18.94 12.12 0 0.0 0.0 0.0 S135 Pumps: 11.87 12.09 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 21.07 11.97 182 0.1 0.1 0.1 0.1 0.1 0.1 S127 Pumps: 12.24 12.06 0 0 0 0 0 0 (cfs) S127 Culvert: 0 0.0 S129 Pumps: 12.05 12.19 0 0 0 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 12.18 12.12 0 0 0 (cfs) S131 Culvert: Fisheating Creek nr Palmdale ______ -NR- nr Lakeport ______ C5: ______ 12.07 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 11.25 12.10 0 0 0 0 (cfs) S169: 12.11 11.41 104 2.5 0.0 2.0 S310: ______ -NR- S3 Pumps: 10.99 12.21 0 0 0 0 (cfs) S354: 12.21 10.99 401 1.3 1.5 S2 Pumps: 10.71 12.13 0 0 0 0 0 (cfs) S351: 12.13 10.71 246 0.5 0.5 0.3 S352: 12.29 11.06 92 0.9 1.2 C10A: -NR- 12.07 -NR- -NR- 7.0 -NR- -NR- L8 Canal PT ______ -NR- _________________________________________________________________________ Temporary Pumps S351: 10.71 12.13 246 -NR--NR--NR--NR--NR--NR- S352: 11.06 12.29 92 -NR--NR--NR--NR- S354: 10.99 12.21 401 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 11.64 11.24 1.5 1.5 S47D: 11.23 10.87 0 0.0 S77: Spillway and Sector Flow: 11.99 11.02 76 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 3 S77 Below USGS Flow Gage -NR- (TESTING) S78: Spillway and Sector Flow: 10.93 3.04 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 26 S79: Spillway and Sector Flow: 3.28 1.63 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 15 Percent of flow from S77 -NR-% Chloride (ppm) 129 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 12.15 12.09 113 0.0 2.5 0.0 0.0 Flow Due to Lockages+: 1 S308 Below USGS Flow Gage -NR- S153: 18.81 11.92 0 0.0 0.0 S80: Spillway and Sector Flow: 12.01 0.40 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 28 Percent of flow from S308 -NR-% 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: -NR- 0.00 0.03 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: -NR- 0.00 0.18 S135 Pump Station: -NR- 0.00 0.69 S127 Pump Station: -NR- 0.00 0.11 S129 Pump Station: -NR- 0.00 0.20 S131 Pump Station: -NR- 0.00 0.44 S77: 0.00 0.00 0.00 51 1 S78: 0.02 0.02 0.02 118 0 S79: 0.00 0.00 0.00 233 0 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: -NR- 0.00 0.21 S3 Pump Station: -NR- 0.00 0.20 S2 Pump Station: -NR- 0.00 0.87 S308: 0.00 0.00 0.25 175 7 S80: 0.00 0.00 1.94 51 1 Okeechobee Average 0.00 0.00 0.24 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 05 APR 2009 12.09 Difference from 05APR09 05APR09 -1 Day = 04 APR 2009 12.11 0.02 05APR09 -2 Days = 03 APR 2009 12.15 0.06 05APR09 -3 Days = 02 APR 2009 12.17 0.08 05APR09 -4 Days = 01 APR 2009 12.18 0.09 05APR09 -5 Days = 31 MAR 2009 12.18 0.09 05APR09 -6 Days = 30 MAR 2009 12.18 0.09 05APR09 -7 Days = 29 MAR 2009 12.20 0.11 05APR09 -30 Days = 06 MAR 2009 12.59 0.50 05APR09 -1 Year = 05 APR 2008 10.32 -1.77 05APR09 -2 Year = 05 APR 2007 10.23 -1.86 ______________________________________________________________________________ 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 05APR09 Today = 05 APR 2009 -NR- MON | -NR- 05APR09 -1 Day = 04 APR 2009 -NR- SUN | -NR- 05APR09 -2 Days = 03 APR 2009 -NR- SAT | -NR- 05APR09 -3 Days = 02 APR 2009 -NR- FRI | -398 05APR09 -4 Days = 01 APR 2009 -NR- THU | -NR- 05APR09 -5 Days = 31 MAR 2009 -NR- WED | -NR- 05APR09 -6 Days = 30 MAR 2009 -NR- TUE | -NR- 05APR09 -7 Days = 29 MAR 2009 -1784 MON | -NR- 05APR09 -8 Days = 28 MAR 2009 -1362 SUN | -NR- 05APR09 -9 Days = 27 MAR 2009 -1534 SAT | -NR- 05APR09 -10 Days = 26 MAR 2009 -1532 FRI | -NR- 05APR09 -11 Days = 25 MAR 2009 -1869 THU | -NR- 05APR09 -12 Days = 24 MAR 2009 -1805 WED | -NR- 05APR09 -13 Days = 23 MAR 2009 -1805 TUE | -NR- ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 05APR09 Today= 05 APR 2009 288 MON | 182 05APR09 -1 Day = 04 APR 2009 285 SUN | 214 05APR09 -2 Days = 03 APR 2009 279 SAT | 218 05APR09 -3 Days = 02 APR 2009 273 FRI | 129 05APR09 -4 Days = 01 APR 2009 279 THU | 684 05APR09 -5 Days = 31 MAR 2009 242 WED | 268 05APR09 -6 Days = 30 MAR 2009 232 TUE | 797 05APR09 -7 Days = 29 MAR 2009 181 MON | 722 05APR09 -8 Days = 28 MAR 2009 143 SUN | 141 05APR09 -9 Days = 27 MAR 2009 148 SAT | 53 05APR09 -10 Days = 26 MAR 2009 155 FRI | 145 05APR09 -11 Days = 25 MAR 2009 156 THU | 185 05APR09 -12 Days = 24 MAR 2009 154 WED | 77 05APR09 -13 Days = 23 MAR 2009 161 TUE | 216 ______________________________________________________________________________ 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) 05 APR 2009 29 156 0 51 -NR- 226 04 APR 2009 776 1260 6 239 -NR- 111 03 APR 2009 687 1224 369 649 303 -NR- 02 APR 2009 781 1367 369 656 393 190 01 APR 2009 880 1632 406 867 334 -NR- 31 MAR 2009 1370 2313 825 1954 225 -NR- 30 MAR 2009 1348 2246 1007 1708 83 -NR- 29 MAR 2009 1133 1985 939 1501 203 -NR- 28 MAR 2009 878 1316 736 1036 121 -NR- 27 MAR 2009 300 772 180 382 500 -NR- 26 MAR 2009 678 1309 180 368 455 -NR- 25 MAR 2009 769 1339 163 -NR- 606 -NR- 24 MAR 2009 445 660 -374 -NR- 285 -NR- 23 MAR 2009 147 278 0 -425 299 -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) 05 APR 2009 29 -NR- 488 182 795 -NR- 04 APR 2009 361 -NR- 706 254 954 -NR- 03 APR 2009 715 -NR- 970 851 1348 94 02 APR 2009 738 -NR- 0 478 964 16 01 APR 2009 810 -NR- 0 38 410 6 31 MAR 2009 974 -NR- 847 520 752 34 30 MAR 2009 2207 -NR- 1658 992 1225 17 29 MAR 2009 2854 -NR- 323 258 315 204 28 MAR 2009 1510 -NR- 0 0 0 93 27 MAR 2009 11 -NR- 286 264 500 6 26 MAR 2009 21 -NR- 795 696 555 57 25 MAR 2009 16 -NR- 740 740 1095 16 24 MAR 2009 28 -NR- 165 311 182 193 23 MAR 2009 20 -NR- 0 0 0 13 *** 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 06APR2009 @ 15:16 ** Preliminary Data - Subject to Revision **