U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 07 SEP 2008 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 15.10 9.61 13.12 (Official Elv) Bottom of High Lake Mngmt= 16.46 Top of Water Short Mngmt= 12.52 Currently in Operational Management Band 07SEP (1965-2007) Period of Record Average 14.42 Difference from POR Average 0.68 Simulated Average LORS2008 [1965-2000] 13.38 Difference from Average LORS2008 1.72 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 9.04' Route 2 ÷ 6.44' Bridge Clearance = 49.90' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 14.96 15.11 15.11 15.21 15.20 15.31 15.01 15.12 *Combination Okeechobee Avg-Daily Lake Average = 15.13 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 14.96 15.11 15.11 15.21 *Interior Okeechobee Avg-Daily Lake Average = 15.10 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 15.05 15.20 15.29 15.16 15.31 15.01 14.98 15.12 15.14 15.08 *Edge Okeechobee Avg-Daily Lake Average = 15.13 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 7118 S191 142 Fisheating Cr 823 S154 155 S133 Pumps -NR- S135 Pumps 0 S84 175 S127 Pumps 0 S2 Pumps 1454 S71 1752 S129 Pumps 67 S3 Pumps 56 S72 464 S131 Pumps 108 S4 Pumps 189 Total Inflows: 12503 Okeechobee Outflows (cfs): S135 Culverts 0 S354 0 S77 3860 S127 Culverts -NR- S351 0 S308 2122 S129 Culverts -NR- S352 0 S131 Culverts L8 Canal Pt -164 C5 -NR- Total Outflows: 5818 Okeechobee Pan Evaporation (inches): S77 0.33 S308 0.29 Average Pan Evap x 0.75 Pan Coefficient = 0.23" = 0.02' Lake Average Precipitation using NEXRAD: = 0.00" = 0.00' Evaporation - Precipitation: = 0.23" = 0.02' Evaporation - Precipitation using Lake Area of 730 square miles is equal to 4564 cfs out of the lake. Lake Okeechobee (Change in Storage) Flow is 6504 cfs or 12900 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: 13.36 15.07 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 18.76 14.75 142 0.0 0.2 1.8 S135 Pumps: 13.06 14.92 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 21.10 15.03 7118 2.7 2.7 2.7 2.7 2.7 2.7 S127 Pumps: 13.48 15.03 0 0 0 0 0 0 (cfs) S127 Culvert: -NR- -NR- S129 Pumps: 13.17 15.06 67 6 31 30 (cfs) S129 Culvert: -NR- -NR- S131 Pumps: 13.14 15.37 108 54 54 (cfs) S131 Culvert: Fisheating Creek nr Palmdale 32.90 823 nr Lakeport ______ C5: ______ 15.05 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 13.08 15.27 189 0 189 0 (cfs) S169: 15.35 12.90 0 0.0 0.0 0.0 S310: ______ -NR- S3 Pumps: ______ -NR- 56 0 0 56 (cfs) S354: -NR- ______ 0 -NR- -NR- S2 Pumps: 11.92 15.24 1454 0 410 1044 0 (cfs) S351: 15.24 11.92 0 -NR- -NR- -NR- S352: 15.30 9.86 0 0.0 0.0 C10A: -NR- 15.07 -NR- -NR- 7.0 -NR- -NR- L8 Canal PT 15.16 -164 _________________________________________________________________________ Temporary Pumps S351: 11.92 15.24 0 -NR--NR--NR--NR--NR--NR- S352: 9.86 15.30 0 -NR--NR--NR--NR- S354: ______ -NR- 0 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 13.44 12.76 0.9 1.4 S47D: 12.87 11.19 41 0.5 S77: Spillway and Sector Flow: 14.63 11.29 3851 4.1 4.1 4.1 4.1 Flow Due to Lockages+: 9 S77 Below USGS Flow Gage 4710 (TESTING) S78: Spillway and Sector Flow: 10.98 3.58 5206 4.0 4.5 4.5 4.0 Flow Due to Lockages+: 14 S79: Spillway and Sector Flow: 2.83 1.75 7484 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 Flow Due to Lockages+: 3 Percent of flow from S77 51% Chloride (ppm) 42 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 15.01 13.60 2118 3.5 3.5 3.5 0.0 Flow Due to Lockages+: 4 S308 Below USGS Flow Gage 2550 S153: 18.83 13.50 155 0.0 0.5 S80: Spillway and Sector Flow: 12.06 1.55 3045 0.0 1.2 1.3 1.3 1.3 1.2 1.2 Flow Due to Lockages+: 10 Percent of flow from S308 70% Steele Point Top Salinity (mg/ml) 19 Steele Point Bottom Salinity (mg/ml) 16 Speedy Point Top Salinity (mg/ml) 13 Speedy Point Bottom Salinity (mg/ml) 5 + 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- 0.06 0.76 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: -NR- 0.14 1.22 S135 Pump Station: -NR- 0.12 0.79 S127 Pump Station: -NR- 0.33 0.71 S129 Pump Station: -NR- 1.27 1.70 S131 Pump Station: -NR- 0.01 0.62 S77: 0.00 0.00 0.00 310 0 S78: 0.00 0.43 0.56 69 1 S79: 0.00 0.00 0.00 48 6 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: -NR- 2.55 4.36 S3 Pump Station: -NR- 1.17 2.72 S2 Pump Station: -NR- 1.54 3.39 S308: 0.01 0.20 0.77 114 6 S80: 0.00 0.12 2.17 25 5 Okeechobee Average 0.00 0.57 1.31 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 07 SEP 2008 15.10 Difference from 07SEP08 07SEP08 -1 Day = 06 SEP 2008 15.07 -0.03 07SEP08 -2 Days = 05 SEP 2008 14.95 -0.15 07SEP08 -3 Days = 04 SEP 2008 14.78 -0.32 07SEP08 -4 Days = 03 SEP 2008 14.75 -0.35 07SEP08 -5 Days = 02 SEP 2008 14.68 -0.42 07SEP08 -6 Days = 01 SEP 2008 14.60 -0.50 07SEP08 -7 Days = 31 AUG 2008 14.50 -0.60 07SEP08 -30 Days = 08 AUG 2008 11.09 -4.01 07SEP08 -1 Year = 07 SEP 2007 9.61 -5.49 07SEP08 -2 Year = 07 SEP 2006 13.12 -1.98 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 4.26 ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 07SEP08 Today = 07 SEP 2008 23932 MON | 12473 07SEP08 -1 Day = 06 SEP 2008 25842 SUN | 30665 07SEP08 -2 Days = 05 SEP 2008 24878 SAT | 39183 07SEP08 -3 Days = 04 SEP 2008 21301 FRI | -NR- 07SEP08 -4 Days = 03 SEP 2008 21301 THU | 14823 07SEP08 -5 Days = 02 SEP 2008 23461 WED | 16940 07SEP08 -6 Days = 01 SEP 2008 26721 TUE | 21175 07SEP08 -7 Days = 31 AUG 2008 -NR- MON | 32267 07SEP08 -8 Days = 30 AUG 2008 -NR- SUN | -NR- 07SEP08 -9 Days = 29 AUG 2008 -NR- SAT | -NR- 07SEP08 -10 Days = 28 AUG 2008 -NR- FRI | -NR- 07SEP08 -11 Days = 27 AUG 2008 -NR- THU | -NR- 07SEP08 -12 Days = 26 AUG 2008 -NR- WED | -NR- 07SEP08 -13 Days = 25 AUG 2008 -NR- TUE | -NR- ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 07SEP08 Today= 07 SEP 2008 11677 MON | 7118 07SEP08 -1 Day = 06 SEP 2008 12276 SUN | 8744 07SEP08 -2 Days = 05 SEP 2008 12797 SAT | 9270 07SEP08 -3 Days = 04 SEP 2008 13349 FRI | 9910 07SEP08 -4 Days = 03 SEP 2008 13641 THU | 10866 07SEP08 -5 Days = 02 SEP 2008 13434 WED | 12026 07SEP08 -6 Days = 01 SEP 2008 12642 TUE | 11861 07SEP08 -7 Days = 31 AUG 2008 11852 MON | 12721 07SEP08 -8 Days = 30 AUG 2008 10948 SUN | 12774 07SEP08 -9 Days = 29 AUG 2008 10096 SAT | 13052 07SEP08 -10 Days = 28 AUG 2008 9340 FRI | 13408 07SEP08 -11 Days = 27 AUG 2008 8500 THU | 13660 07SEP08 -12 Days = 26 AUG 2008 7661 WED | 13676 07SEP08 -13 Days = 25 AUG 2008 6837 TUE | 14394 ______________________________________________________________________________ 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) 07 SEP 2008 4693 7654 6137 10351 5057 4207 06 SEP 2008 4095 -NR- 6451 10322 3917 3341 05 SEP 2008 2925 4387 4355 6734 1211 932 04 SEP 2008 -NR- -NR- 2260 4573 335 287 03 SEP 2008 -NR- -NR- 2269 3831 84 8 02 SEP 2008 -NR- -NR- 2270 4177 54 3 01 SEP 2008 -NR- -NR- 3438 5176 161 3 31 AUG 2008 -NR- -NR- 3603 5895 443 2 30 AUG 2008 -NR- -NR- 3000 -NR- 100 -1 29 AUG 2008 -NR- -NR- 4020 7710 99 -0 28 AUG 2008 -NR- -NR- 4000 8064 134 0 27 AUG 2008 -NR- -NR- 4981 9783 52 0 26 AUG 2008 0 0 6299 -NR- -157 0 25 AUG 2008 0 2 5283 9896 8 0 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) 07 SEP 2008 14847 -NR- 0 0 0 -324 06 SEP 2008 14896 -NR- 0 0 0 -716 05 SEP 2008 11075 -NR- 0 0 0 -303 04 SEP 2008 9192 -NR- 0 0 0 -122 03 SEP 2008 9828 -NR- 0 0 0 -370 02 SEP 2008 10059 -NR- 0 0 0 -644 01 SEP 2008 12952 -NR- 0 0 0 -961 31 AUG 2008 24866 -NR- 0 0 0 -1100 30 AUG 2008 15232 -NR- 0 0 0 -1169 29 AUG 2008 18084 -NR- 0 0 0 -1387 28 AUG 2008 22317 -NR- 0 0 0 -1828 27 AUG 2008 22989 -NR- 0 0 0 -1941 26 AUG 2008 26715 -NR- 0 0 0 -1969 25 AUG 2008 26883 -NR- 0 0 0 -1978 *** 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 08SEP2008 @ 15:15 ** Preliminary Data - Subject to Revision **