U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 14 SEP 2008 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 15.15 9.61 13.39 (Official Elv) Bottom of High Lake Mngmt= 16.50 Top of Water Short Mngmt= 12.67 Currently in Operational Management Band 14SEP (1965-2007) Period of Record Average 14.55 Difference from POR Average 0.60 Simulated Average LORS2008 [1965-2000] 13.49 Difference from Average LORS2008 1.66 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 9.09' Route 2 ÷ 6.49' Bridge Clearance = 48.97' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 15.02 15.18 15.13 15.25 15.27 15.34 15.07 15.20 *Combination Okeechobee Avg-Daily Lake Average = 15.18 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 15.02 15.18 15.13 15.25 *Interior Okeechobee Avg-Daily Lake Average = 15.15 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 15.33 15.27 15.29 15.19 15.34 15.07 15.03 15.20 15.13 15.15 *Edge Okeechobee Avg-Daily Lake Average = 15.20 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 3328 S191 158 Fisheating Cr -NR- S154 42 S133 Pumps -NR- S135 Pumps 0 S84 0 S127 Pumps 0 S2 Pumps 0 S71 431 S129 Pumps 0 S3 Pumps 0 S72 -NR- S131 Pumps 24 S4 Pumps 0 Total Inflows: 3983 Okeechobee Outflows (cfs): S135 Culverts 0 S354 0 S77 3 S127 Culverts -NR- S351 0 S308 192 S129 Culverts -NR- S352 0 S131 Culverts L8 Canal Pt 132 C5 -NR- Total Outflows: 326 Okeechobee Pan Evaporation (inches): S77 0.30 S308 0.24 Average Pan Evap x 0.75 Pan Coefficient = 0.20" = 0.02' Lake Average Precipitation using NEXRAD: = 0.02" = 0.00' Evaporation - Precipitation: = 0.18" = 0.02' Evaporation - Precipitation using Lake Area of 730 square miles is equal to 3582 cfs out of the lake. Lake Okeechobee (Change in Storage) Flow is 2168 cfs or 4300 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: 13.49 15.21 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 18.03 14.90 158 1.7 1.4 1.7 S135 Pumps: 13.23 15.03 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 20.96 15.11 3328 1.4 1.4 1.4 1.4 1.4 1.4 S127 Pumps: 13.66 15.14 0 0 0 0 0 0 (cfs) S127 Culvert: -NR- -NR- S129 Pumps: 13.15 15.17 0 0 0 0 (cfs) S129 Culvert: -NR- -NR- S131 Pumps: 12.88 15.39 24 0 24 (cfs) S131 Culvert: Fisheating Creek nr Palmdale 27.19 -NR- nr Lakeport ______ C5: ______ 15.33 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 10.82 15.27 0 0 0 0 (cfs) S169: 15.27 10.99 0 0.0 0.0 0.0 S310: ______ -NR- S3 Pumps: ______ -NR- 0 0 0 0 (cfs) S354: -NR- ______ 0 -NR- -NR- S2 Pumps: 10.49 15.19 0 0 0 0 0 (cfs) S351: 15.19 10.49 0 -NR- -NR- -NR- S352: 15.32 10.61 0 -NR- -NR- C10A: -NR- 14.73 -NR- -NR- 7.0 -NR- -NR- L8 Canal PT 14.78 132 _________________________________________________________________________ Temporary Pumps S351: 10.49 15.19 0 -NR--NR--NR--NR--NR--NR- S352: 10.61 15.32 0 -NR--NR--NR--NR- S354: ______ -NR- 0 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 13.16 12.57 0.4 0.4 S47D: 12.44 10.53 10 0.5 S77: Spillway and Sector Flow: 15.19 10.61 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 3 S77 Below USGS Flow Gage 120 (TESTING) S78: Spillway and Sector Flow: 10.59 2.98 315 0.0 0.5 0.5 0.0 Flow Due to Lockages+: 17 S79: Spillway and Sector Flow: 2.84 1.13 1680 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Flow Due to Lockages+: 3 Percent of flow from S77 0% Chloride (ppm) 22 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 15.11 14.53 190 0.0 0.5 0.0 0.0 Flow Due to Lockages+: 2 S308 Below USGS Flow Gage 285 S153: 18.69 14.46 -NR- -NR- 0.0 S80: Spillway and Sector Flow: 14.68 1.95 329 0.0 0.2 0.0 0.0 0.0 0.2 0.0 Flow Due to Lockages+: 27 Percent of flow from S308 58% Steele Point Top Salinity (mg/ml) 27 Steele Point Bottom Salinity (mg/ml) 24 Speedy Point Top Salinity (mg/ml) 12 Speedy Point Bottom Salinity (mg/ml) 7 + 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: 0.04 0.04 0.04 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: 0.00 0.00 0.31 S135 Pump Station: 0.00 0.00 0.06 S127 Pump Station: 0.00 0.00 0.15 S129 Pump Station: 0.00 0.00 0.19 S131 Pump Station: 0.00 0.00 0.04 S77: 0.00 0.00 0.00 64 0 S78: 0.00 0.00 0.62 107 2 S79: 0.31 0.33 1.54 299 2 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: 0.00 0.00 0.46 S3 Pump Station: 0.00 0.00 0.01 S2 Pump Station: 0.00 0.00 0.06 S308: 0.00 0.05 0.49 82 2 S80: 0.00 0.00 0.32 23 0 Okeechobee Average 0.00 0.01 0.14 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 14 SEP 2008 15.15 Difference from 14SEP08 14SEP08 -1 Day = 13 SEP 2008 15.14 -0.01 14SEP08 -2 Days = 12 SEP 2008 15.13 -0.02 14SEP08 -3 Days = 11 SEP 2008 15.12 -0.03 14SEP08 -4 Days = 10 SEP 2008 15.11 -0.04 14SEP08 -5 Days = 09 SEP 2008 15.09 -0.06 14SEP08 -6 Days = 08 SEP 2008 15.10 -0.05 14SEP08 -7 Days = 07 SEP 2008 15.10 -0.05 14SEP08 -30 Days = 15 AUG 2008 11.27 -3.88 14SEP08 -1 Year = 14 SEP 2007 9.61 -5.54 14SEP08 -2 Year = 14 SEP 2006 13.39 -1.76 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 4.13 ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 14SEP08 Today = 14 SEP 2008 12810 MON | 2489 14SEP08 -1 Day = 13 SEP 2008 15101 SUN | 2553 14SEP08 -2 Days = 12 SEP 2008 16146 SAT | 3136 14SEP08 -3 Days = 11 SEP 2008 17329 FRI | 3546 14SEP08 -4 Days = 10 SEP 2008 18707 THU | 8749 14SEP08 -5 Days = 09 SEP 2008 19814 WED | 4383 14SEP08 -6 Days = 08 SEP 2008 21743 TUE | 6415 14SEP08 -7 Days = 07 SEP 2008 23932 MON | 12473 14SEP08 -8 Days = 06 SEP 2008 25842 SUN | 30665 14SEP08 -9 Days = 05 SEP 2008 24878 SAT | 39183 14SEP08 -10 Days = 04 SEP 2008 21301 FRI | -NR- 14SEP08 -11 Days = 03 SEP 2008 21301 THU | 14823 14SEP08 -12 Days = 02 SEP 2008 23461 WED | 16940 14SEP08 -13 Days = 01 SEP 2008 26721 TUE | 21175 ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 14SEP08 Today= 14 SEP 2008 7597 MON | 3328 14SEP08 -1 Day = 13 SEP 2008 8268 SUN | 4658 14SEP08 -2 Days = 12 SEP 2008 8847 SAT | 4761 14SEP08 -3 Days = 11 SEP 2008 9440 FRI | 4775 14SEP08 -4 Days = 10 SEP 2008 10056 THU | 5527 14SEP08 -5 Days = 09 SEP 2008 10637 WED | 6734 14SEP08 -6 Days = 08 SEP 2008 11133 TUE | 6839 14SEP08 -7 Days = 07 SEP 2008 11673 MON | 7094 14SEP08 -8 Days = 06 SEP 2008 12273 SUN | 8718 14SEP08 -9 Days = 05 SEP 2008 12796 SAT | 9258 14SEP08 -10 Days = 04 SEP 2008 13349 FRI | 9906 14SEP08 -11 Days = 03 SEP 2008 13641 THU | 10845 14SEP08 -12 Days = 02 SEP 2008 13436 WED | 12051 14SEP08 -13 Days = 01 SEP 2008 12642 TUE | 11861 ______________________________________________________________________________ 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) 14 SEP 2008 0 7 370 658 565 380 13 SEP 2008 0 11 549 916 868 530 12 SEP 2008 0 6 741 1242 2194 1791 11 SEP 2008 0 5 1148 1305 2955 2681 10 SEP 2008 3031 5999 3784 7391 3001 2758 09 SEP 2008 6092 10197 7834 13181 2884 2796 08 SEP 2008 5854 9264 7250 11563 4282 -NR- 07 SEP 2008 4693 7654 6137 10351 5057 4207 06 SEP 2008 4095 -NR- 6451 10322 3917 3341 05 SEP 2008 2597 4387 3898 6734 1211 932 04 SEP 2008 -NR- -NR- 2081 4573 335 287 03 SEP 2008 0 -NR- 1989 3831 84 8 02 SEP 2008 0 -NR- 1992 4177 54 3 01 SEP 2008 0 -NR- 3152 5176 161 3 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) 14 SEP 2008 3338 -NR- 0 0 0 261 13 SEP 2008 2943 -NR- 0 0 0 236 12 SEP 2008 4660 -NR- 0 0 0 130 11 SEP 2008 4871 -NR- 0 0 0 53 10 SEP 2008 6500 -NR- 0 0 0 -181 09 SEP 2008 18262 -NR- 0 0 0 -303 08 SEP 2008 16073 -NR- 0 0 0 -230 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 *** 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 15SEP2008 @ 15:15 ** Preliminary Data - Subject to Revision **