oke U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report ** Preliminary Data - Subject to Revision ** Data Ending 2400 hours 23 OCT 2021 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 15.84 16.35 13.48 (Official Elv) Bottom of High Lake Mngmt= 17.11 Top of Water Short Mngmt= 12.85 Currently in Operational Management Band Simulated Average LORS2008 [1965-2000] 14.02 Difference from Average LORS2008 1.82 23OCT (1965-2007) Period of Record Average 15.06 Difference from POR Average 0.78 Today Lake Okeechobee elevation is determined from the 4 Int & 4 Edge stations ++Navigation Depth (Based on 2007 Channel Condition Survey) Route 1 ÷ 9.78' ++Navigation Depth (Based on 2008 Channel Condition Survey) Route 2 ÷ 7.98' Bridge Clearance = 48.88' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 15.79 15.87 15.84 15.81 15.88 15.93 15.82 15.72 *Combination Okeechobee Avg-Daily Lake Average = 15.84 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 1727 S65EX1 0 Fisheating Cr 210 S154 56 S191 0 S135 Pumps 0 S84 379 S133 Pumps 0 S2 Pumps 0 S84X 48 S127 Pumps 0 S3 Pumps 0 S71 0 S129 Pumps 0 S4 Pumps 0 S72 230 S131 Pumps 0 C5 0 Total Inflows: 2650 Okeechobee Outflows (cfs): S135 Culverts -NR- S354 0 S77 180 S127 Culverts 0 S351 0 S308 5 S129 Culverts 0 S352 29 S131 Culverts 0 L8 Canal Pt -NR- Total Outflows: 215 ****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 0.21 S308 0.28 Average Pan Evap x 0.75 Pan Coefficient = 0.18" = 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 2168 cfs or 4300 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: 13.43 15.76 0 0 0 0 0 0 (cfs) S193: ______ S191: 19.60 15.73 0 0.0 0.0 0.0 S135 Pumps: 13.40 15.67 0 0 0 0 0 (cfs) S135 Culverts: -NR- -NR- -NR- North West Shore S65E: 21.07 15.52 1727 0.6 0.6 0.6 1.3 0.6 1.3 S65EX1: 21.07 15.52 0 S127 Pumps: 13.49 15.74 0 0 0 0 0 0 (cfs) S127 Culvert: 0 0.0 S129 Pumps: 12.91 15.82 0 0 0 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 12.87 15.86 0 0 0 (cfs) S131 Culvert: 0 Fisheating Creek nr Palmdale 31.73 210 nr Lakeport ______ C5: ______ -NR- 0 -NR- -NR- -NR- South Shore S4 Pumps: 11.87 15.89 0 0 0 0 (cfs) S169: ______ -NR- -NR- -NR- -NR- -NR- S310: 15.84 125 S3 Pumps: 9.32 15.84 0 0 0 0 (cfs) S354: 15.84 9.32 0 0.0 0.0 S2 Pumps: 10.10 -NR- 0 -NR- -NR- -NR- -NR- (cfs) S351: -NR- 10.10 0 0.0 0.0 0.0 S352: 15.94 9.91 29 0.1 0.0 C10A: -NR- 15.91 8.0 8.0 8.0 0.0 0.0 L8 Canal PT ______ -NR- _________________________________________________________________________ S351 and S352 Temporary Pumps/S354 Spillway S351: 10.10 -NR- 0 -NR--NR--NR--NR--NR--NR- S352: 9.91 15.94 29 -NR--NR--NR--NR- S354: 9.32 15.84 0 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 13.18 12.72 2.8 3.3 S47D: 12.47 11.54 127 1.4 S77: Spillway and Sector Preferred Flow: 15.69 11.43 176 0.2 0.2 0.2 0.2 Flow Due to Lockages+: 4 S78: Spillway and Sector Flow: 11.46 2.85 106 0.2 0.0 0.0 0.2 Flow Due to Lockages+: -NR- S79: Spillway and Sector Flow: 3.00 1.43 591 0.0 0.0 0.0 2.3 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 6 Percent of flow from S77 30% Chloride (ppm) 0 St. Lucie Canal (S308, S80) S308: Spillway and Sector Preferred Flow: 15.82 14.62 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 5 S153: 18.77 14.27 27 0.1 0.0 S80: Spillway and Sector Flow: 14.58 1.45 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 25 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: 0.00 0.00 0.00 16 4 S78: 0.00 0.00 0.00 341 1 S79: -0.64 -0.64 -1.28 342 4 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: 2.03 2.03 2.03 49 5 S80: 6.15 6.35 6.35 8 1 Okeechobee Average 1.01 0.16 0.16 (Sites S78, S79 and S80 not included) ----------------------------------------------------------------- Oke Nexrad Basin Avg -NR- 0.00 0.00 ----------------------------------------------------------------- ______________________________________________________________________________ Okeechobee Lake Elevations 23 OCT 2021 15.84 Difference from 23OCT21 23OCT21 -1 Day = 22 OCT 2021 15.83 -0.01 23OCT21 -2 Days = 21 OCT 2021 15.83 -0.01 23OCT21 -3 Days = 20 OCT 2021 15.83 -0.01 23OCT21 -4 Days = 19 OCT 2021 15.84 0.00 23OCT21 -5 Days = 18 OCT 2021 15.86 0.02 23OCT21 -6 Days = 17 OCT 2021 15.88 0.04 23OCT21 -7 Days = 16 OCT 2021 15.88 0.04 23OCT21 -30 Days = 23 SEP 2021 15.25 -0.59 23OCT21 -1 Year = 23 OCT 2020 16.35 0.51 23OCT21 -2 Year = 23 OCT 2019 13.48 -2.36 ______________________________________________________________________________ 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 23OCT21 Today = 23 OCT 2021 1226 SUN | 2373 23OCT21 -1 Day = 22 OCT 2021 2760 SAT | 250 23OCT21 -2 Days = 21 OCT 2021 3052 FRI | 429 23OCT21 -3 Days = 20 OCT 2021 3177 THU | -1813 23OCT21 -4 Days = 19 OCT 2021 3617 WED | -3976 23OCT21 -5 Days = 18 OCT 2021 4056 TUE | -3942 23OCT21 -6 Days = 17 OCT 2021 4492 MON | 0 23OCT21 -7 Days = 16 OCT 2021 4802 SUN | 0 23OCT21 -8 Days = 15 OCT 2021 4802 SAT | 4336 23OCT21 -9 Days = 14 OCT 2021 4802 FRI | 0 23OCT21 -10 Days = 13 OCT 2021 5111 THU | 4336 23OCT21 -11 Days = 12 OCT 2021 5111 WED | 2168 23OCT21 -12 Days = 11 OCT 2021 5576 TUE | 0 23OCT21 -13 Days = 10 OCT 2021 6195 MON | 13008 ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 23OCT21 Today= 23 OCT 2021 1977 SUN | 1888 23OCT21 -1 Day = 22 OCT 2021 2010 SAT | 1740 23OCT21 -2 Days = 21 OCT 2021 2049 FRI | 1880 23OCT21 -3 Days = 20 OCT 2021 2061 THU | 1916 23OCT21 -4 Days = 19 OCT 2021 2101 WED | 1992 23OCT21 -5 Days = 18 OCT 2021 2139 TUE | 2018 23OCT21 -6 Days = 17 OCT 2021 2177 MON | 2045 23OCT21 -7 Days = 16 OCT 2021 2233 SUN | 2069 23OCT21 -8 Days = 15 OCT 2021 2290 SAT | 2051 23OCT21 -9 Days = 14 OCT 2021 2345 FRI | 2042 23OCT21 -10 Days = 13 OCT 2021 2429 THU | 2058 23OCT21 -11 Days = 12 OCT 2021 2519 WED | 1959 23OCT21 -12 Days = 11 OCT 2021 2643 TUE | 1905 23OCT21 -13 Days = 10 OCT 2021 2776 MON | 2121 ______________________________________________________________________________ ______________________________________________________________________________ S65EX1 Average Flow over previous 14 days | Avg-Daily Flow 23OCT21 Today= 23 OCT 2021 0 SUN | 0 23OCT21 -1 Day = 22 OCT 2021 0 SAT | 0 23OCT21 -2 Days = 21 OCT 2021 0 FRI | 0 23OCT21 -3 Days = 20 OCT 2021 0 THU | 0 23OCT21 -4 Days = 19 OCT 2021 0 WED | 0 23OCT21 -5 Days = 18 OCT 2021 0 TUE | 0 23OCT21 -6 Days = 17 OCT 2021 0 MON | 0 23OCT21 -7 Days = 16 OCT 2021 0 SUN | 0 23OCT21 -8 Days = 15 OCT 2021 0 SAT | 0 23OCT21 -9 Days = 14 OCT 2021 0 FRI | 0 23OCT21 -10 Days = 13 OCT 2021 0 THU | 0 23OCT21 -11 Days = 12 OCT 2021 0 WED | 0 23OCT21 -12 Days = 11 OCT 2021 0 TUE | 0 23OCT21 -13 Days = 10 OCT 2021 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 OCT 2021 353 720 -NR- 1178 22 OCT 2021 370 320 21 675 21 OCT 2021 383 324 28 195 20 OCT 2021 151 239 20 1440 19 OCT 2021 13 -16 117 1046 18 OCT 2021 9 66 595 2928 17 OCT 2021 12 50 676 2945 16 OCT 2021 14 256 18 2723 15 OCT 2021 7 30 426 2469 14 OCT 2021 7 124 1260 5508 13 OCT 2021 12 257 1292 4383 12 OCT 2021 7 152 1196 7980 11 OCT 2021 8 77 1340 5737 10 OCT 2021 15 84 2165 7805 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 OCT 2021 247 0 58 0 -NR- 22 OCT 2021 12 0 60 72 -NR- 21 OCT 2021 71 0 287 199 -NR- 20 OCT 2021 76 0 355 215 -NR- 19 OCT 2021 25 0 237 478 -NR- 18 OCT 2021 2 0 267 514 -NR- 17 OCT 2021 181 0 0 0 -NR- 16 OCT 2021 213 0 0 0 -NR- 15 OCT 2021 6 0 0 0 -NR- 14 OCT 2021 3 0 0 0 -NR- 13 OCT 2021 4 0 0 0 -NR- 12 OCT 2021 8 0 0 0 -NR- 11 OCT 2021 5 0 0 0 -NR- 10 OCT 2021 8 0 0 0 -25556 S-308 Below S-308 S-80 Discharge Discharge Discharge (ALL DAY) (ALL-DAY) (ALL-DAY) DATE (AC-FT) (AC-FT) (AC-FT) 23 OCT 2021 10 -NR- 50 22 OCT 2021 6 -NR- 33 21 OCT 2021 5 -NR- 29 20 OCT 2021 8 9 40 19 OCT 2021 7 70 149 18 OCT 2021 2 -5 461 17 OCT 2021 6 92 494 16 OCT 2021 6 -113 475 15 OCT 2021 3 -83 337 14 OCT 2021 5 -73 37 13 OCT 2021 4 -44 450 12 OCT 2021 4 134 1057 11 OCT 2021 4 -1 951 10 OCT 2021 3 -66 1408 *** 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 24OCT2021 @ 09:15 ** Preliminary Data - Subject to Revision **