oke U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report ** Preliminary Data - Subject to Revision ** LOSOM24 Reg ZoneA = 16.75 LOSOM24 Reg ZoneBC = 16.20 LOSOM24 Reg ZoneD = 10.78 Data Ending 2400 hours 12 MAY 2025 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 11.10 13.77 13.98 (Official Elv) 12MAY (1965-2007) Period of Record Average 13.34 Difference from POR Average -2.24 Today Lake Okeechobee elevation is determined from the 4 Int & 4 Edge stations ++Navigation Depth (Based on 2007 Channel Condition Survey) Route 1 ÷ 5.04' ++Navigation Depth (Based on 2008 Channel Condition Survey) Route 2 ÷ 3.24' Bridge Clearance = 52.35' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 11.24 11.14 10.56 11.08 -NR- 10.99 10.90 11.26 *Combination Okeechobee Avg-Daily Lake Average = 11.10 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 329 S65EX1 0 Fisheating Cr 0 S154 0 S191 0 S135 Pumps 0 S84 64 S133 Pumps 0 S2 Pumps 0 S84X 44 S127 Pumps 0 S3 Pumps 0 S71 67 S129 Pumps 0 S4 Pumps 0 S72 30 S131 Pumps 123 C5 0 Total Inflows: 657 Okeechobee Outflows (cfs): S135 Culverts 0 S354 46 S77 35 S127 Culverts 0 S351 0 S308 63 S129 Culverts 0 S352 0 S131 Culverts 0 L8 Canal Pt 21 Total Outflows: 165 ****S77 structure flow is being used to compute Total Outflow. ****S308 below flow meter is being used to compute Total Outflow. Okeechobee Pan Evaporation (inches): S77 0.00 S308 0.17 Average Pan Evap x 0.75 Pan Coefficient = 0.06" = 0.01' 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 16335 cfs or 32400 AC-FT ______________________________________________________________________________ ______________________________________________________________________________ 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: 12.89 11.09 0 0 0 0 0 -NR- (cfs) S193: ______ S191: 18.73 11.08 0 0.0 0.0 0.0 S135 Pumps: 11.86 10.85 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 20.96 10.80 329 0.2 0.4 0.0 0.2 0.0 0.0 S65EX1: 20.96 10.80 0 S127 Pumps: 12.34 11.24 0 0 0 0 0 0 (cfs) S127 Culvert: 0 0.0 S129 Pumps: 12.85 11.83 0 0 0 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 12.91 13.24 123 -NR- 44 (cfs) S131 Culvert: 0 Fisheating Creek nr Palmdale 27.95 0 nr Lakeport ______ S282 11.19 11.31 0.0 0.0 0.1 South Shore S4 Pumps: 11.81 14.27 0 0 0 0 (cfs) S169: ______ -NR- -NR- -NR- -NR- -NR- S310: ______ -NR- S3 Pumps: 9.68 11.11 0 0 0 0 (cfs) S354: 11.11 9.68 46 0.0 0.0 S2 Pumps: 10.26 10.80 0 0 0 0 0 (cfs) S351: 10.80 10.26 0 0.0 0.0 0.0 S352: 11.33 9.43 0 0.0 0.1 S271: 11.53 11.41 9.3 9.2 9.8 8.5 L8 Canal PT 11.15 21 _________________________________________________________________________ S351 and S352 Temporary Pumps/S354 Spillway S351: 10.26 10.80 0 -NR--NR--NR--NR--NR--NR- S352: 9.43 11.33 0 -NR--NR--NR--NR- S354: 9.68 11.11 46 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 13.38 12.29 2.5 3.0 S47D: 11.61 11.50 190 6.0 S77: Spillway and Sector Preferred Flow: 11.21 11.32 35 2.5 3.0 3.0 2.5 Flow Due to Lockages+: 0 S78: Spillway and Sector Flow: 11.32 3.40 296 1.0 0.0 0.0 0.0 Flow Due to Lockages+: 8 S79: Spillway and Sector Flow: 3.46 1.02 383 0.0 0.0 0.0 1.0 1.0 0.0 0.0 0.0 Flow Due to Lockages+: 2 Percent of flow from S77 9% Chloride (ppm) 0 St. Lucie Canal (S308, S80) S308: Spillway and Sector Preferred Flow: 11.13 11.15 63 3.0 3.0 3.0 3.0 Flow Due to Lockages+: -0 S153: 18.59 11.05 65 0.0 0.0 S80: Spillway and Sector Flow: 11.42 1.38 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 6 Percent of flow from S308 NA % Steele Point Top Salinity (mg/ml) **** Steele Point Bottom Salinity (mg/ml) **** Speedy Point Top Salinity (mg/ml) **** Speedy Point Bottom Salinity (mg/ml) **** + 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. ++ Preferred flow is determined from either the spillway discharge or the below flow meter daily ______________________________________________________________________________ ----- Wind ---- Daily Precipitation Totals 1-Day 3-Day 7-Day Direction Speed (inches) (inches) (inches) (Degų) (mph) S133 Pump Station: -NR- 0.00 0.00 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: -NR- 0.00 0.00 S135 Pump Station: -NR- 0.00 0.00 S127 Pump Station: -NR- 0.00 0.00 S129 Pump Station: -NR- 0.00 0.00 S131 Pump Station: -NR- 0.00 0.00 S77: 6.52 10.16 10.40 173 -NR- S78: -NR- 0.00 0.00 -NR- -NR- S79: -NR- 0.00 0.00 122 1 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: -NR- 0.00 0.00 S3 Pump Station: -NR- 0.00 0.00 S2 Pump Station: -NR- 0.00 0.00 S308: -NR- 0.00 0.00 144 6 S80: -NR- 0.00 0.00 -NR- -NR- Okeechobee Average 6.52 0.78 0.80 (Sites S78, S79 and S80 not included) ----------------------------------------------------------------- Oke Nexrad Basin Avg -NR- 0.00 0.00 ----------------------------------------------------------------- ______________________________________________________________________________ Okeechobee Lake Elevations 12 MAY 2025 11.10 Difference from 12MAY25 12MAY25 -1 Day = 11 MAY 2025 11.01 -0.09 12MAY25 -2 Days = 10 MAY 2025 11.00 -0.10 12MAY25 -3 Days = 09 MAY 2025 11.06 -0.04 12MAY25 -4 Days = 08 MAY 2025 11.08 -0.02 12MAY25 -5 Days = 07 MAY 2025 11.09 -0.01 12MAY25 -6 Days = 06 MAY 2025 11.12 0.02 12MAY25 -7 Days = 05 MAY 2025 11.09 -0.01 12MAY25 -30 Days = 12 APR 2025 12.15 1.05 12MAY25 -1 Year = 12 MAY 2024 13.77 2.67 12MAY25 -2 Year = 12 MAY 2023 13.98 2.88 ______________________________________________________________________________ ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 12MAY25 Today = 12 MAY 2025 -944 TUE | 16500 12MAY25 -1 Day = 11 MAY 2025 -2453 MON | 2298 12MAY25 -2 Days = 10 MAY 2025 -2852 SUN | -8876 12MAY25 -3 Days = 09 MAY 2025 -2456 SAT | -1277 12MAY25 -4 Days = 08 MAY 2025 -2980 FRI | 722 12MAY25 -5 Days = 07 MAY 2025 -3175 THU | -2807 12MAY25 -6 Days = 06 MAY 2025 -3272 WED | 7696 12MAY25 -7 Days = 05 MAY 2025 -4115 TUE | -13512 12MAY25 -8 Days = 04 MAY 2025 -3515 MON | 3430 12MAY25 -9 Days = 03 MAY 2025 -4026 SUN | 672 12MAY25 -10 Days = 02 MAY 2025 -4304 SAT | -877 12MAY25 -11 Days = 01 MAY 2025 -4446 FRI | -8550 12MAY25 -12 Days = 30 APR 2025 -4011 THU | -843 12MAY25 -13 Days = 29 APR 2025 -4394 WED | -7798 ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 12MAY25 Today= 12 MAY 2025 178 TUE | 403 12MAY25 -1 Day = 11 MAY 2025 167 MON | 97 12MAY25 -2 Days = 10 MAY 2025 180 SUN | 103 12MAY25 -3 Days = 09 MAY 2025 190 SAT | 88 12MAY25 -4 Days = 08 MAY 2025 203 FRI | 108 12MAY25 -5 Days = 07 MAY 2025 216 THU | 217 12MAY25 -6 Days = 06 MAY 2025 220 WED | 142 12MAY25 -7 Days = 05 MAY 2025 230 TUE | 153 12MAY25 -8 Days = 04 MAY 2025 238 MON | 99 12MAY25 -9 Days = 03 MAY 2025 251 SUN | 117 12MAY25 -10 Days = 02 MAY 2025 262 SAT | 172 12MAY25 -11 Days = 01 MAY 2025 270 FRI | 240 12MAY25 -12 Days = 30 APR 2025 274 THU | 282 12MAY25 -13 Days = 29 APR 2025 277 WED | 277 ______________________________________________________________________________ ______________________________________________________________________________ S65EX1 Average Flow over previous 14 days | Avg-Daily Flow 12MAY25 Today= 12 MAY 2025 0 TUE | 0 12MAY25 -1 Day = 11 MAY 2025 0 MON | 0 12MAY25 -2 Days = 10 MAY 2025 0 SUN | 0 12MAY25 -3 Days = 09 MAY 2025 0 SAT | 0 12MAY25 -4 Days = 08 MAY 2025 0 FRI | 0 12MAY25 -5 Days = 07 MAY 2025 0 THU | 0 12MAY25 -6 Days = 06 MAY 2025 0 WED | 0 12MAY25 -7 Days = 05 MAY 2025 0 TUE | 0 12MAY25 -8 Days = 04 MAY 2025 0 MON | 0 12MAY25 -9 Days = 03 MAY 2025 0 SUN | 0 12MAY25 -10 Days = 02 MAY 2025 0 SAT | 0 12MAY25 -11 Days = 01 MAY 2025 0 FRI | 0 12MAY25 -12 Days = 30 APR 2025 0 THU | 0 12MAY25 -13 Days = 29 APR 2025 0 WED | 0 ______________________________________________________________________________ Lake Okeechobee Outlets Last 14 Days S-77 Below S-77 S-78 S-79 Discharge Discharge Discharge Discharge (ALL DAY) (ALL-DAY) (ALL DAY) (ALL DAY) DATE (AC-FT) (AC-FT) (AC-FT) (AC-FT) 12 MAY 2025 28 -851 603 766 11 MAY 2025 678 355 518 629 10 MAY 2025 735 739 310 655 09 MAY 2025 1118 1479 425 761 08 MAY 2025 1156 1476 694 798 07 MAY 2025 1120 1513 710 728 06 MAY 2025 1369 1574 695 564 05 MAY 2025 1381 1552 706 648 04 MAY 2025 1468 1704 708 739 03 MAY 2025 1570 1563 703 682 02 MAY 2025 1808 1847 712 888 01 MAY 2025 1757 1764 718 914 30 APR 2025 1843 1751 724 662 29 APR 2025 2083 2142 702 269 S-310 S-351 S-352 S-354 L8 Canal Pt Discharge Discharge Discharge Discharge Discharge (ALL DAY) (ALL DAY) (ALL DAY) (ALL DAY) (ALL DAY) DATE (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) 12 MAY 2025 -NR- 0 0 91 -NR- 11 MAY 2025 -NR- 168 250 166 -NR- 10 MAY 2025 -NR- 1295 886 850 -NR- 09 MAY 2025 -NR- 1688 919 765 -NR- 08 MAY 2025 -NR- 1859 923 829 -NR- 07 MAY 2025 -NR- 1648 925 922 -NR- 06 MAY 2025 -NR- 1471 611 774 -NR- 05 MAY 2025 -NR- 1495 378 1058 -NR- 04 MAY 2025 -NR- 478 530 382 -NR- 03 MAY 2025 -NR- 1704 1048 3573 -NR- 02 MAY 2025 -NR- 1868 1069 3811 -NR- 01 MAY 2025 -NR- 2515 1104 2507 -NR- 30 APR 2025 -NR- 3089 1170 2264 -NR- 29 APR 2025 -NR- 3090 1210 2374 -NR- S-308 Below S-308 S-80 Discharge Discharge Discharge (ALL DAY) (ALL-DAY) (ALL-DAY) DATE (AC-FT) (AC-FT) (AC-FT) 12 MAY 2025 -1846 123 12 11 MAY 2025 -2479 -60 24 10 MAY 2025 -2480 147 24 09 MAY 2025 -2471 102 28 08 MAY 2025 -2138 214 25 07 MAY 2025 -1544 400 31 06 MAY 2025 -1263 411 25 05 MAY 2025 -1580 479 34 04 MAY 2025 -1920 389 34 03 MAY 2025 -1349 336 31 02 MAY 2025 -648 303 34 01 MAY 2025 -831 298 36 30 APR 2025 -384 458 39 29 APR 2025 -NR- 197 39 *** NOTE: 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 ______________________________________________________________________________ * On 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, the average of the interior 4 station gages was used as the Lake Okeechobee Elevation. On 05 November 2010, Lake Okeechobee Elevation was switched to a 9 gage mix of interior and edge gages to obtain a more reliable representation of the lake level. On 09 May 2011, Lake Okeechobee Elevation was switched to a 8 gage mix of interior and edge gages to obtain a more reliable representation of the lake level due to isolation of S135 from low lake levels. Today Lake Okechobee elevation is determined from the 4 Int & 4 Edge stations ++ For more information see the Jacksonville District Navigation website at http://www.saj.usace.army.mil/ $ For information regarding Lake Okeechobee Service Area water restrictions please refer to www.sfwmd.gov ______________________________________________________________________________ Report Generated 13MAY2025 @ 18:39 ** Preliminary Data - Subject to Revision **