U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 24 FEB 2008 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 10.12 11.28 15.37 (Official Elv) Regulation Zone Elevations B= 18.50 C= 17.30 D= 16.47 E= 14.31 24FEB (1965-2006) Period of Record Average 14.62 Difference from POR Average -4.50 Simulated Average LORSS2007 TSP[1965-2000] 13.35 Difference from Average LORSS2007 TSP -3.23 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 4.06' Route 2 ÷ 1.46' Bridge Clearance = 52.97' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): (BAD) L001 L005 L006 LZ40 S4 S352 S308 S133 10.04 10.03 10.17 10.25 10.21 10.46 10.19 10.22 *Combination Okeechobee Avg-Daily Lake Average = 10.20 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 10.04 10.03 10.17 10.25 *Interior Okeechobee Avg-Daily Lake Average = 10.12 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) (BAD) (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 10.15 10.21 10.29 10.26 10.46 10.19 10.49 10.22 10.97 11.14 *Edge Okeechobee Avg-Daily Lake Average = 10.44 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 350 S191 -NR- Fisheating Cr -NR- S154 0 S133 Pumps 0 S135 Pumps -NR- S84 0 S127 Pumps 0 S2 Pumps 0 S71 0 S129 Pumps 0 S3 Pumps 0 S72 -NR- S131 Pumps 0 S4 Pumps 0 Total Inflows: 350 Okeechobee Outflows (cfs): S135 Culverts -NR- S354 0 S77 -160 S127 Culverts -NR- S351 0 S308 (BAD) -0 S129 Culverts 0 S352 -NR- S131 Culverts L8 Canal Pt -680 C5 -NR- Total Outflows: -841 (BAD VALUE) Okeechobee Pan Evaporation (inches): S77 0.17 S308 0.06 Average Pan Evap x 0.75 Pan Coefficient = 0.09" = 0.01' Lake Average Precipitation using NEXRAD: = 0.05" = 0.00' Evaporation - Precipitation: = 0.04" = 0.00' Evaporation - Precipitation using Lake Area of 730 square miles is equal to 712 cfs out of the lake. Lake Okeechobee (Change in Storage) Flow is -1664 cfs or -3300 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: 12.36 10.18 0 0 0 0 0 0 (cfs) S193: ______ S191: 19.28 10.08 -NR- 0.0 0.0 -NR- S135 Pumps: 11.74 10.48 -NR- 0 0 -NR- -NR- (cfs) S135 Culverts: -NR- 0.0 0.0 North West Shore S65E: 21.08 9.65 350 0.2 0.2 0.1 0.1 0.1 0.1 S127 Pumps: 12.52 -NR- 0 0 0 0 0 0 (cfs) S127 Culvert: -NR- -NR- S129 Pumps: 10.27 11.13 0 0 0 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 10.94 10.13 0 0 0 (cfs) S131 Culvert: Fisheating Creek nr Palmdale ______ -NR- nr Lakeport ______ C5: ______ 10.15 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 10.17 10.11 0 0 0 0 (cfs) S169: 10.19 10.39 0 0.0 0.0 0.0 S310: ______ -NR- S3 Pumps: ______ -NR- 0 0 0 0 (cfs) S354: -NR- ______ 0 -NR- -NR- S2 Pumps: 10.19 10.33 0 0 0 0 0 (cfs) S351: 10.33 10.19 0 -NR- -NR- -NR- S352: ______ -NR- -NR- -NR- -NR- C10A: -NR- 11.43 -NR- -NR- 8.0 -NR- -NR- L8 Canal PT 11.61 -680 _________________________________________________________________________ Temporary Pumps S351: 10.19 10.33 0 -NR--NR--NR--NR--NR--NR- S352: -NR- ______ -NR- -NR--NR--NR--NR- S354: ______ -NR- 0 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 10.05 10.82 -NR- -NR- S47D: 10.82 10.05 0 0.0 S77: Spillway and Sector Flow: 9.97 10.19 -160 0.8 0.8 0.8 0.8 Flow Due to Lockages+: -0 S78: Spillway and Sector Flow: 10.18 3.27 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 18 S79: Spillway and Sector Flow: 3.26 -0.14 180 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 3 Percent of flow from S77 -89% Chloride (ppm) 171 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 10.26 10.53 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: -0 S308 Below USGS Flow Gage -58 S153: 19.05 10.40 -NR- -NR- 0.0 S80: Spillway and Sector Flow: 10.64 2.59 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 4 Percent of flow from S308 -NR-% Steele Point Top Salinity (mg/ml) 32 Steele Point Bottom Salinity (mg/ml) 32 Speedy Point Top Salinity (mg/ml) 21 Speedy Point Bottom Salinity (mg/ml) 24 + 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 0.22 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: -NR- 0.00 0.47 S135 Pump Station: -NR- 0.00 0.05 S127 Pump Station: -NR- 0.00 0.16 S129 Pump Station: -NR- 0.00 0.25 S131 Pump Station: -NR- 0.00 0.24 S77: 0.00 0.00 0.76 208 3 S78: 0.00 0.01 0.30 60 0 S79: 0.05 0.05 1.25 334 2 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: -NR- 0.00 0.68 S3 Pump Station: -NR- 0.00 0.42 S2 Pump Station: -NR- 0.00 0.18 S308: 0.00 0.00 0.08 33 11 S80: 0.14 0.14 0.93 22 2 Okeechobee Average 0.00 0.00 0.27 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 24 FEB 2008 10.12 Difference from 24FEB08 24FEB08 -1 Day = 23 FEB 2008 10.13 0.01 24FEB08 -2 Days = 22 FEB 2008 10.14 0.02 24FEB08 -3 Days = 21 FEB 2008 10.12 0.00 24FEB08 -4 Days = 20 FEB 2008 10.10 -0.02 24FEB08 -5 Days = 19 FEB 2008 10.10 -0.02 24FEB08 -6 Days = 18 FEB 2008 10.13 0.01 24FEB08 -7 Days = 17 FEB 2008 10.14 0.02 24FEB08 -30 Days = 25 JAN 2008 10.09 -0.03 24FEB08 -1 Year = 24 FEB 2007 11.28 1.16 24FEB08 -2 Year = 24 FEB 2006 15.37 5.25 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 2.60 ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 24FEB08 Today = 24 FEB 2008 -NR- MON | -NR- 24FEB08 -1 Day = 23 FEB 2008 -NR- SUN | -NR- 24FEB08 -2 Days = 22 FEB 2008 -NR- SAT | -NR- 24FEB08 -3 Days = 21 FEB 2008 -NR- FRI | -NR- 24FEB08 -4 Days = 20 FEB 2008 -NR- THU | -NR- 24FEB08 -5 Days = 19 FEB 2008 -NR- WED | -NR- 24FEB08 -6 Days = 18 FEB 2008 -NR- TUE | -NR- 24FEB08 -7 Days = 17 FEB 2008 -NR- MON | -NR- 24FEB08 -8 Days = 16 FEB 2008 -NR- SUN | -NR- 24FEB08 -9 Days = 15 FEB 2008 -938 SAT | -NR- 24FEB08 -10 Days = 14 FEB 2008 -1204 FRI | -NR- 24FEB08 -11 Days = 13 FEB 2008 -838 THU | -NR- 24FEB08 -12 Days = 12 FEB 2008 -661 WED | -NR- 24FEB08 -13 Days = 11 FEB 2008 -236 TUE | -NR- ______________________________________________________________________________ ______________________________________________________________________________ S65-E Average Flow over previous 14 days | Avg-Daily Flow 24FEB08 Today= 24 FEB 2008 261 MON | 350 24FEB08 -1 Day = 23 FEB 2008 247 SUN | 162 24FEB08 -2 Days = 22 FEB 2008 263 SAT | 162 24FEB08 -3 Days = 21 FEB 2008 258 FRI | 162 24FEB08 -4 Days = 20 FEB 2008 270 THU | 198 24FEB08 -5 Days = 19 FEB 2008 279 WED | 188 24FEB08 -6 Days = 18 FEB 2008 290 TUE | 30 24FEB08 -7 Days = 17 FEB 2008 308 MON | 143 24FEB08 -8 Days = 16 FEB 2008 302 SUN | 293 24FEB08 -9 Days = 15 FEB 2008 307 SAT | 659 24FEB08 -10 Days = 14 FEB 2008 306 FRI | 913 24FEB08 -11 Days = 13 FEB 2008 274 THU | 390 24FEB08 -12 Days = 12 FEB 2008 246 WED | 0 24FEB08 -13 Days = 11 FEB 2008 246 TUE | 0 ______________________________________________________________________________ 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) 24 FEB 2008 -197 -318 0 35 -116 -1 23 FEB 2008 -276 -429 0 21 -185 -1 22 FEB 2008 -257 -397 0 10 -43 0 21 FEB 2008 -34 -143 0 8 235 2 20 FEB 2008 -130 -230 0 14 407 40 19 FEB 2008 -203 -350 0 14 83 1 18 FEB 2008 -378 -604 0 19 -110 -1 17 FEB 2008 -335 -558 0 19 -11 -2 16 FEB 2008 -346 -588 0 24 -49 -1 15 FEB 2008 -336 -636 0 8 -275 -276 14 FEB 2008 -320 -595 0 19 -551 -414 13 FEB 2008 -334 -619 0 9 -141 -0 12 FEB 2008 -106 -198 0 9 56 -1 11 FEB 2008 150 191 0 15 -180 -2 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) 24 FEB 2008 363 -NR- 0 -NR- 0 -1348 23 FEB 2008 408 -NR- 0 -NR- 0 -1369 22 FEB 2008 6 -NR- 0 -NR- 0 -1350 21 FEB 2008 7 -NR- 0 -NR- 0 -1309 20 FEB 2008 8 -NR- 0 -NR- 0 -1343 19 FEB 2008 7 -NR- 0 -NR- 0 -1357 18 FEB 2008 216 -NR- 0 -NR- 0 -1392 17 FEB 2008 343 -NR- 0 -NR- 0 -1256 16 FEB 2008 370 -NR- -NR- -NR- 0 -644 15 FEB 2008 1180 -NR- -NR- -NR- 0 -785 14 FEB 2008 8 -NR- -NR- -NR- 0 -1125 13 FEB 2008 1 -NR- -NR- -NR- 0 -956 12 FEB 2008 3 -NR- -NR- -NR- 0 -104 11 FEB 2008 5 -NR- -NR- -NR- 109 -67 *** 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 25FEB2008 @ 14:15 ** Preliminary Data - Subject to Revision **