oke U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report ** Preliminary Data - Subject to Revision ** LOSOM24 Reg ZoneA = 16.61 LOSOM24 Reg ZoneBC = 16.14 LOSOM24 Reg ZoneD = 10.62 Data Ending 2400 hours 23 MAY 2026 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 11.25 10.93 13.30 (Official Elv) 23MAY (1965-2007) Period of Record Average 13.18 Difference from POR Average -1.93 Today Lake Okeechobee elevation is determined from the 4 Int & 4 Edge stations ++Navigation Depth (Based on 2007 Channel Condition Survey) Route 1 ÷ 5.19' ++Navigation Depth (Based on 2008 Channel Condition Survey) Route 2 ÷ 3.39' Bridge Clearance = 49.27' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 13.79 11.35 11.22 11.17 11.36 11.25 11.15 11.26 *Combination Okeechobee Avg-Daily Lake Average = 11.25 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 191 S65EX1 0 Fisheating Cr 0 S154 0 S191 0 S135 Pumps 0 S84 0 S133 Pumps 0 S2 Pumps 0 S84X 0 S127 Pumps 0 S3 Pumps 0 S71 0 S129 Pumps 0 S4 Pumps 0 S72 0 S131 Pumps 0 C5 0 Total Inflows: 191 Okeechobee Outflows (cfs): S135 Culverts 0 S354 335 S77 -NR- S127 Culverts 0 S351 1057 S308 -9 S129 Culverts 0 S352 185 S131 Culverts 0 L8 Canal Pt 22 Total Outflows: No Report Due To Missing S77 or S308 Discharge Data ****S77 structure flow is being used to compute Total Outflow. ****S308 structure flow is being used to compute Total Outflow. Okeechobee Pan Evaporation (inches): S77 -NR- S308 -NR- Average Pan Evap x 0.75 Pan Coefficient = -NR-" = -NR-' 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 -3630 cfs or -7200 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: 12.67 11.16 0 0 0 0 0 -NR- (cfs) S193: ______ S191: 18.59 11.13 0 0.0 0.0 0.0 S135 Pumps: 11.91 11.04 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 20.99 11.04 191 0.0 0.1 0.1 0.0 0.0 0.2 S65EX1: 20.99 11.04 0 S127 Pumps: 11.96 11.34 0 0 0 0 0 0 (cfs) S127 Culvert: 0 0.0 S129 Pumps: 13.08 10.95 0 0 0 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 12.28 11.65 0 0 0 (cfs) S131 Culvert: 0 Fisheating Creek nr Palmdale 27.21 0 nr Lakeport ______ S282 11.31 11.30 0.0 0.0 0.0 South Shore S4 Pumps: 11.20 11.40 0 0 0 0 (cfs) S169: ______ -NR- -NR- -NR- -NR- -NR- S310: ______ -NR- S3 Pumps: 10.04 11.21 0 0 0 0 (cfs) S354: 11.21 10.04 335 1.2 0.9 S2 Pumps: 9.90 11.14 0 0 0 0 0 (cfs) S351: 11.14 9.90 1057 2.5 2.4 3.2 S352: 11.23 10.24 185 0.0 0.0 S271: 11.33 11.42 9.2 9.8 9.8 8.5 L8 Canal PT ______ 22 _________________________________________________________________________ S351 and S352 Temporary Pumps/S354 Spillway S351: 9.90 11.14 1057 -NR--NR--NR--NR--NR--NR- S352: 10.24 11.23 185 -NR--NR--NR--NR- S354: 10.04 11.21 335 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 11.28 10.87 0.0 0.0 S47D: 10.99 10.98 79 5.0 S77: Spillway and Sector Preferred Flow: 11.20 10.89 354 2.5 2.5 0.0 0.0 Flow Due to Lockages+: -NR- S78: Spillway and Sector Flow: 10.90 2.86 136 0.5 0.0 0.0 0.0 Flow Due to Lockages+: -NR- S79: Spillway and Sector Flow: 3.08 2.17 373 0.0 0.0 1.0 1.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: -NR- Percent of flow from S77 95% Chloride (ppm) -N St. Lucie Canal (S308, S80) S308: Spillway and Sector Preferred Flow: 11.10 14.23 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: -9 S153: 18.78 14.06 0 0.0 0.0 S80: Spillway and Sector Flow: 14.24 0.26 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 23 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: -NR- 0.00 0.00 128 -NR- S78: -NR- 0.00 0.00 -NR- -NR- S79: -NR- 0.00 0.00 91 6 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 97 4 S80: -NR- 0.00 0.00 -NR- -NR- Okeechobee Average -NR- 0.00 0.00 (Sites S78, S79 and S80 not included) ----------------------------------------------------------------- Oke Nexrad Basin Avg -NR- 0.00 0.00 ----------------------------------------------------------------- ______________________________________________________________________________ Okeechobee Lake Elevations 23 MAY 2026 11.25 Difference from 23MAY26 23MAY26 -1 Day = 22 MAY 2026 11.27 0.02 23MAY26 -2 Days = 21 MAY 2026 11.31 0.06 23MAY26 -3 Days = 20 MAY 2026 11.33 0.08 23MAY26 -4 Days = 19 MAY 2026 11.38 0.13 23MAY26 -5 Days = 18 MAY 2026 11.39 0.14 23MAY26 -6 Days = 17 MAY 2026 11.38 0.13 23MAY26 -7 Days = 16 MAY 2026 11.40 0.15 23MAY26 -30 Days = 23 APR 2026 11.83 0.58 23MAY26 -1 Year = 23 MAY 2025 10.93 -0.32 23MAY26 -2 Year = 23 MAY 2024 13.30 2.05 ______________________________________________________________________________ ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 23MAY26 Today = 23 MAY 2026 -492 SUN | -1677 23MAY26 -1 Day = 22 MAY 2026 -566 SAT | -4702 23MAY26 -2 Days = 21 MAY 2026 -618 FRI | -1325 23MAY26 -3 Days = 20 MAY 2026 -668 THU | -6615 23MAY26 -4 Days = 19 MAY 2026 -415 WED | 45 23MAY26 -5 Days = 18 MAY 2026 -662 TUE | 2711 23MAY26 -6 Days = 17 MAY 2026 -1097 MON | -2957 23MAY26 -7 Days = 16 MAY 2026 -836 SUN | -4462 23MAY26 -8 Days = 15 MAY 2026 -970 SAT | 4564 23MAY26 -9 Days = 14 MAY 2026 -1613 FRI | -3004 23MAY26 -10 Days = 13 MAY 2026 -1557 THU | 1981 23MAY26 -11 Days = 12 MAY 2026 -2205 WED | 2318 23MAY26 -12 Days = 11 MAY 2026 -2389 TUE | 6684 23MAY26 -13 Days = 10 MAY 2026 -2983 MON | -452 ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 23MAY26 Today= 23 MAY 2026 273 SUN | 230 23MAY26 -1 Day = 22 MAY 2026 272 SAT | 238 23MAY26 -2 Days = 21 MAY 2026 272 FRI | 248 23MAY26 -3 Days = 20 MAY 2026 288 THU | 267 23MAY26 -4 Days = 19 MAY 2026 285 WED | 284 23MAY26 -5 Days = 18 MAY 2026 284 TUE | 302 23MAY26 -6 Days = 17 MAY 2026 285 MON | 230 23MAY26 -7 Days = 16 MAY 2026 293 SUN | 236 23MAY26 -8 Days = 15 MAY 2026 291 SAT | 336 23MAY26 -9 Days = 14 MAY 2026 284 FRI | 248 23MAY26 -10 Days = 13 MAY 2026 293 THU | 271 23MAY26 -11 Days = 12 MAY 2026 297 WED | 276 23MAY26 -12 Days = 11 MAY 2026 295 TUE | 343 23MAY26 -13 Days = 10 MAY 2026 288 MON | 314 ______________________________________________________________________________ ______________________________________________________________________________ S65EX1 Average Flow over previous 14 days | Avg-Daily Flow 23MAY26 Today= 23 MAY 2026 0 SUN | 0 23MAY26 -1 Day = 22 MAY 2026 0 SAT | 0 23MAY26 -2 Days = 21 MAY 2026 0 FRI | 0 23MAY26 -3 Days = 20 MAY 2026 0 THU | 0 23MAY26 -4 Days = 19 MAY 2026 0 WED | 0 23MAY26 -5 Days = 18 MAY 2026 0 TUE | 0 23MAY26 -6 Days = 17 MAY 2026 0 MON | 0 23MAY26 -7 Days = 16 MAY 2026 0 SUN | 0 23MAY26 -8 Days = 15 MAY 2026 0 SAT | 0 23MAY26 -9 Days = 14 MAY 2026 0 FRI | 0 23MAY26 -10 Days = 13 MAY 2026 0 THU | 0 23MAY26 -11 Days = 12 MAY 2026 0 WED | 0 23MAY26 -12 Days = 11 MAY 2026 0 TUE | 0 23MAY26 -13 Days = 10 MAY 2026 0 MON | 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) 23 MAY 2026 -NR- 1026 -NR- -NR- 22 MAY 2026 793 1077 23 682 21 MAY 2026 826 1064 104 1100 20 MAY 2026 876 1000 354 867 19 MAY 2026 597 668 357 765 18 MAY 2026 623 531 371 727 17 MAY 2026 1543 234 373 686 16 MAY 2026 1419 1139 361 716 15 MAY 2026 1811 1438 379 742 14 MAY 2026 1909 1242 365 718 13 MAY 2026 705 280 174 571 12 MAY 2026 1505 956 16 79 11 MAY 2026 1592 1266 21 12 10 MAY 2026 1728 1475 32 10 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) 23 MAY 2026 -NR- 2097 366 664 -NR- 22 MAY 2026 -NR- 2235 599 1293 -NR- 21 MAY 2026 -NR- 1545 345 1609 -NR- 20 MAY 2026 -NR- 1319 382 1763 -NR- 19 MAY 2026 -NR- 1420 468 1130 -NR- 18 MAY 2026 -NR- 904 243 199 -NR- 17 MAY 2026 -NR- 862 39 0 -NR- 16 MAY 2026 -NR- 500 0 21 -NR- 15 MAY 2026 -NR- 0 0 0 -NR- 14 MAY 2026 -NR- 0 0 0 -NR- 13 MAY 2026 -NR- 0 0 0 -NR- 12 MAY 2026 -NR- 27 0 0 -NR- 11 MAY 2026 -NR- 752 152 160 -NR- 10 MAY 2026 -NR- 2563 756 980 -NR- S-308 Below S-308 S-80 Discharge Discharge Discharge (ALL DAY) (ALL-DAY) (ALL-DAY) DATE (AC-FT) (AC-FT) (AC-FT) 23 MAY 2026 -17 -NR- 45 22 MAY 2026 -13 -7 33 21 MAY 2026 -19 -9 -NR- 20 MAY 2026 -7 -9 25 19 MAY 2026 -6 -11 21 18 MAY 2026 -7 -9 28 17 MAY 2026 -4 -11 24 16 MAY 2026 -7 -7 48 15 MAY 2026 -6 -7 20 14 MAY 2026 -7 -6 43 13 MAY 2026 -5 -4 26 12 MAY 2026 -2 -3 32 11 MAY 2026 -1 -4 31 10 MAY 2026 -0 -7 24 *** 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 24MAY2026 @ 04:45 ** Preliminary Data - Subject to Revision **