U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 26 APR 2009 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 11.33 10.36 9.78 (Official Elv) Bottom of High Lake Mngmt= 16.74 Top of Water Short Mngmt= 11.05 Currently in Operational Management Band 26APR (1965-2007) Period of Record Average 13.72 Difference from POR Average -2.39 Simulated Average LORS2008 [1965-2000] 12.50 Difference from Average LORS2008 -1.17 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 5.27' Route 2 ÷ 2.67' Bridge Clearance = 52.53' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 11.13 11.50 11.29 11.41 11.60 11.37 11.13 11.24 *Combination Okeechobee Avg-Daily Lake Average = 11.33 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 11.13 11.50 11.29 11.41 *Interior Okeechobee Avg-Daily Lake Average = 11.33 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 11.79 11.60 11.44 11.28 11.37 11.13 11.06 11.24 11.27 10.60 *Edge Okeechobee Avg-Daily Lake Average = 11.28 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 92 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 -NR- S3 Pumps 0 S72 0 S131 Pumps 0 S4 Pumps 0 Total Inflows: 92 Okeechobee Outflows (cfs): S135 Culverts 0 S354 604 S77 -NR- S127 Culverts 0 S351 790 S308 301 S129 Culverts 0 S352 186 S131 Culverts L8 Canal Pt 23 C5 -NR- Total Outflows: No Report Due To Missing S77 or S308 Discharge Data Okeechobee Pan Evaporation (inches): S77 0.38 S308 0.31 Average Pan Evap x 0.75 Pan Coefficient = 0.26" = 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 -7058 cfs or -14000 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: 11.81 11.12 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 17.82 11.10 0 0.0 0.0 0.0 S135 Pumps: 10.65 11.03 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 21.05 11.05 92 0.1 0.1 0.1 0.1 0.1 0.1 S127 Pumps: 11.69 11.24 0 0 0 0 0 0 (cfs) S127 Culvert: 0 0.0 S129 Pumps: 11.53 10.56 -NR- 0 -NR- 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 11.65 12.02 0 0 0 (cfs) S131 Culvert: Fisheating Creek nr Palmdale ______ -NR- nr Lakeport ______ C5: ______ 11.79 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 10.98 11.59 0 0 0 0 (cfs) S169: 11.52 11.19 113 2.5 2.5 2.5 S310: ______ -NR- S3 Pumps: 11.20 11.45 0 0 0 0 (cfs) S354: 11.45 11.20 604 5.2 5.2 S2 Pumps: 11.16 11.32 0 0 0 0 0 (cfs) S351: 11.32 11.16 790 6.0 6.0 6.0 S352: 11.33 11.32 186 6.3 6.4 C10A: -NR- 11.11 -NR- -NR- 7.0 -NR- -NR- L8 Canal PT 11.19 23 _________________________________________________________________________ Temporary Pumps S351: 11.16 11.32 790 -NR--NR--NR--NR--NR--NR- S352: 11.32 11.33 186 -NR--NR--NR--NR- S354: 11.20 11.45 604 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 11.53 10.64 0.0 0.0 S47D: 10.67 10.73 -57 2.0 S77: Spillway and Sector Flow: -NR- -NR- -NR- 0.0 -NR- -NR- -NR- Flow Due to Lockages+: -NR- S77 Below USGS Flow Gage 103 (TESTING) S78: Spillway and Sector Flow: 10.87 3.00 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 22 S79: Spillway and Sector Flow: 2.91 0.29 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 8 Percent of flow from S77 -NR-% Chloride (ppm) 157 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 11.15 10.97 301 0.0 2.5 0.0 0.0 Flow Due to Lockages+: 0 S308 Below USGS Flow Gage 183 S153: 18.58 10.84 0 0.0 0.0 S80: Spillway and Sector Flow: 10.94 0.95 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 15 Percent of flow from S308 -NR-% Steele Point Top Salinity (mg/ml) 26 Steele Point Bottom Salinity (mg/ml) 28 Speedy Point Top Salinity (mg/ml) 24 Speedy Point Bottom Salinity (mg/ml) 28 + 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 0.00 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 0.00 S129 Pump Station: 0.00 0.00 0.00 S131 Pump Station: 0.00 0.00 0.00 S77: -NR- 0.00 0.00 -NR- -NR- S78: 0.00 0.00 0.00 28 4 S79: 0.00 0.00 0.00 49 0 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: 0.00 0.00 0.80 S3 Pump Station: 0.00 0.00 0.12 S2 Pump Station: 0.00 0.00 0.50 S308: 0.00 0.00 0.07 57 5 S80: 0.00 0.00 0.29 32 5 Okeechobee Average 0.00 0.00 0.11 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 26 APR 2009 11.33 Difference from 26APR09 26APR09 -1 Day = 25 APR 2009 11.37 0.04 26APR09 -2 Days = 24 APR 2009 11.40 0.07 26APR09 -3 Days = 23 APR 2009 11.44 0.11 26APR09 -4 Days = 22 APR 2009 11.46 0.13 26APR09 -5 Days = 21 APR 2009 11.49 0.16 26APR09 -6 Days = 20 APR 2009 11.52 0.19 26APR09 -7 Days = 19 APR 2009 11.56 0.23 26APR09 -30 Days = 27 MAR 2009 12.25 0.92 26APR09 -1 Year = 26 APR 2008 10.36 -0.97 26APR09 -2 Year = 26 APR 2007 9.78 -1.55 ______________________________________________________________________________ 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 26APR09 Today = 26 APR 2009 -2603 MON | -NR- 26APR09 -1 Day = 25 APR 2009 -2277 SUN | -NR- 26APR09 -2 Days = 24 APR 2009 -2486 SAT | -NR- 26APR09 -3 Days = 23 APR 2009 -2440 FRI | -NR- 26APR09 -4 Days = 22 APR 2009 -2440 THU | -NR- 26APR09 -5 Days = 21 APR 2009 -2033 WED | -NR- 26APR09 -6 Days = 20 APR 2009 -2033 TUE | -4743 26APR09 -7 Days = 19 APR 2009 -1731 MON | -3873 26APR09 -8 Days = 18 APR 2009 -1464 SUN | -3227 26APR09 -9 Days = 17 APR 2009 -1212 SAT | -3945 26APR09 -10 Days = 16 APR 2009 -756 FRI | -1976 26APR09 -11 Days = 15 APR 2009 -493 THU | -NR- 26APR09 -12 Days = 14 APR 2009 -493 WED | -NR- 26APR09 -13 Days = 13 APR 2009 -493 TUE | 2145 ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 26APR09 Today= 26 APR 2009 149 MON | 92 26APR09 -1 Day = 25 APR 2009 158 SUN | 211 26APR09 -2 Days = 24 APR 2009 160 SAT | 59 26APR09 -3 Days = 23 APR 2009 158 FRI | 193 26APR09 -4 Days = 22 APR 2009 158 THU | 198 26APR09 -5 Days = 21 APR 2009 160 WED | 66 26APR09 -6 Days = 20 APR 2009 162 TUE | 64 26APR09 -7 Days = 19 APR 2009 177 MON | 64 26APR09 -8 Days = 18 APR 2009 184 SUN | 237 26APR09 -9 Days = 17 APR 2009 181 SAT | 259 26APR09 -10 Days = 16 APR 2009 177 FRI | 242 26APR09 -11 Days = 15 APR 2009 170 THU | 66 26APR09 -12 Days = 14 APR 2009 216 WED | 212 26APR09 -13 Days = 13 APR 2009 215 TUE | 122 ______________________________________________________________________________ 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) 26 APR 2009 -NR- -NR- 0 44 363 597 25 APR 2009 -NR- -NR- 129 -NR- 359 657 24 APR 2009 -NR- -NR- 367 644 560 1371 23 APR 2009 -NR- -NR- 303 -NR- 528 475 22 APR 2009 -NR- -NR- 40 120 88 347 21 APR 2009 -NR- -NR- 93 208 318 663 20 APR 2009 312 542 171 243 660 980 19 APR 2009 372 644 0 40 337 482 18 APR 2009 551 931 0 45 266 393 17 APR 2009 617 1593 0 312 492 659 16 APR 2009 1226 2042 484 873 551 60 15 APR 2009 775 1525 324 829 -75 -NR- 14 APR 2009 1313 2492 644 1741 1409 -NR- 13 APR 2009 1859 3579 1598 3102 1172 640 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) 26 APR 2009 16 -NR- 1567 369 1198 45 25 APR 2009 15 -NR- 1721 167 1634 -12 24 APR 2009 12 -NR- 1739 698 1852 -53 23 APR 2009 10 -NR- 1600 452 1717 -99 22 APR 2009 12 -NR- 1011 807 1741 -224 21 APR 2009 10 -NR- 430 888 1099 -108 20 APR 2009 7 -NR- 1376 984 1065 46 19 APR 2009 33 -NR- 1208 295 490 -37 18 APR 2009 36 -NR- 1485 496 896 -55 17 APR 2009 311 -NR- 1840 660 1424 -62 16 APR 2009 1106 -NR- 1995 894 1592 -116 15 APR 2009 1179 -NR- 1459 1051 789 -51 14 APR 2009 1976 -NR- 1503 1329 1388 165 13 APR 2009 3573 -NR- 1650 912 976 -9 *** 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 27APR2009 @ 15:15 ** Preliminary Data - Subject to Revision **