U. S. Army Corps of Engineers, Jacksonville District
Lake Okeechobee and Vicinity Report
** Preliminary Data - Subject to Revision **
Data Ending 2400 hours 30 OCT 2011
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Okeechobee Lake Regulation Elevation Last Year 2YRS Ago
(ft-NGVD) (ft-NGVD) (ft-NGVD)
*Okeechobee Lake Elevation 13.47 13.50 14.09 (Official Elv)
Bottom of High Lake Mngmt= 17.22 Top of Water Short Mngmt= 12.81
Currently in Operational Management Band
Simulated Average LORS2008 [1965-2000] 13.97
Difference from Average LORS2008 -0.50
30OCT (1965-2007) Period of Record Average 15.03
Difference from POR Average -1.56
Today Lake Okechobee elevation is determined from the 4 Int & 4 Edge stations
++Navigation Depth (Based on 2007 Channel Condition Survey) Route 1 ÷ 7.41'
++Navigation Depth (Based on 2008 Channel Condition Survey) Route 2 ÷ 5.61'
Bridge Clearance = 49.77'
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4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values):
L001 L005 L006 LZ40 S4 S352 S308 S133
13.09 13.52 13.59 13.58 13.91 13.61 13.33 13.17
*Combination Okeechobee Avg-Daily Lake Average = 13.47
(*See Note)
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Okeechobee Inflows (cfs):
S65E 7941 S191 446 Fisheating Cr 451
S154 56 S133 Pumps 0 S135 Pumps -NR-
S84 622 S127 Pumps -NR- S2 Pumps 0
S71 1255 S129 Pumps 0 S3 Pumps 0
S72 458 S131 Pumps 0 S4 Pumps 576
Total Inflows: 11805
Okeechobee Outflows (cfs):
S135 Culverts -NR- S354 0 S77 1 (Used)
S127 Culverts 0 S351 0 S77Below 118 (NOT USED)
S129 Culverts 0 S352 -NR- S308 -245 (Used)
S131 Culverts L8 Canal Pt -494 S308Below -837 (NOT USED)
C5 0
Total Outflows: -738
****S77 Structure outflow is being used to compute Total Outflow.
****S308 Structure outflow is being used to compute Total Outflow.
Okeechobee Pan Evaporation (inches):
S77 0.15 S308 0.10
Average Pan Evap x 0.75 Pan Coefficient = 0.09" = 0.01'
Lake Average Precipitation using NEXRAD: = 0.09" = 0.01'
Evaporation - Precipitation: = 0.00" = 0.00'
Evaporation - Precipitation using Lake Area of 730 square miles
is equal to 74 cfs out of the lake.
Lake Okeechobee (Change in Storage) Flow is 10335 cfs or 20500 AC-FT
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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: 13.57 13.29 0 0 0 0 0 0 (cfs)
S193: ______
S191: 18.71 13.27 446 0.5 0.5 0.6
S135 Pumps: ______ -NR- -NR- -NR- -NR- -NR- -NR- (cfs)
S135 Culverts: -NR- 0.0 0.0
North West Shore
S65E: 20.85 13.51 7941 3.0 3.0 3.0 3.0 2.5 2.5
S127 Pumps: 13.50 13.39 -NR- 0 -NR- 0 0 0 (cfs)
S127 Culvert: 0 0.0
S129 Pumps: 12.99 13.62 0 0 0 0 (cfs)
S129 Culvert: 0 0.0
S131 Pumps: 12.89 13.92 0 0 0 (cfs)
S131 Culvert:
Fisheating Creek
nr Palmdale 32.36 451
nr Lakeport 14.91
C5: 16.05 13.82 0 0.0 0.0 0.0
South Shore
S4 Pumps: 11.14 13.88 576 0 295 280 (cfs)
S169: 13.85 11.24 0 0.0 0.0 0.0
S310: 24.41 -347
S3 Pumps: 10.95 13.78 0 0 0 0 (cfs)
S354: 13.78 10.95 0 0.0 0.0
S2 Pumps: 11.21 13.64 0 0 0 0 0 (cfs)
S351: 13.64 11.21 0 0.0 0.0 0.0
S352: ______ -NR- -NR- -NR- -NR-
C10A: -NR- -NR- -NR- -NR- 7.0 -NR- -NR-
L8 Canal PT 13.61 -494
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S351 and S352 Temporary Pumps/S354 Spillway
S351: 11.21 13.64 0 -NR--NR--NR--NR--NR--NR-
S352: -NR- ______ -NR- -NR--NR--NR--NR-
S354: 10.95 13.78 0 -NR--NR--NR--NR-
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Caloosahatchee River (S77, S78, S79)
S47B: 13.32 12.79 2.5 3.0
S47D: 12.74 11.20 192 1.0
S77:
Spillway and Sector Flow:
13.83 11.36 0 0.0 0.0 0.0 0.0
Flow Due to Lockages+: 1
S77 Below USGS Flow Gage 118
S78:
Spillway and Sector Flow:
11.26 2.73 2459 2.0 2.0 2.0 1.5
Flow Due to Lockages+: 7
S79:
Spillway and Sector Flow:
2.70 0.74 6467 2.0 3.0 4.0 3.0 4.0 4.0 3.0 2.0
Flow Due to Lockages+: 6
Percent of flow from S77 0%
Chloride (ppm) 44
St. Lucie Canal (S308, S80)
S308:
Spillway and Sector Flow:
13.35 13.73 -244 0.0 0.0 0.0 0.0
Flow Due to Lockages+: -1
S308 Below USGS Flow Gage -837
S153: 18.70 13.58 50 0.5 0.0
S80:
Spillway and Sector Flow:
13.89 1.60 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Flow Due to Lockages+: 18
Percent of flow from S308 -NR-%
Steele Point Top Salinity (mg/ml) ****
Steele Point Bottom Salinity (mg/ml) ****
Speedy Point Top Salinity (mg/ml) -N
Speedy Point Bottom Salinity (mg/ml) -N
+ 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.
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----- Wind ----
Daily Precipitation Totals 1-Day 3-Day 7-Day Direction Speed
(inches) (inches) (inches) (Degų) (mph)
S133 Pump Station: -NR- 1.36 1.36
S193: -NR- 0.00 0.00 -NR- -NR-
Okeechobee Field Station: -NR- 0.00 0.00
S135 Pump Station: -NR- 1.93 1.93
S127 Pump Station: -NR- 2.27 2.27
S129 Pump Station: -NR- 1.82 1.83
S131 Pump Station: -NR- 1.86 1.86
S77: 0.61 3.71 6.31 272 7
S78: 0.10 2.11 2.11 79 10
S79: 0.05 2.68 2.68 67 11
S4 Pump Station: -NR- 0.00 0.00
Clewiston Field Station: -NR- 2.56 2.56
S3 Pump Station: -NR- 2.87 2.87
S2 Pump Station: -NR- 1.87 1.87
S308: 0.04 1.63 1.63 47 10
S80: 0.54 2.47 2.51 79 6
Okeechobee Average 0.33 1.68 1.88
(Sites S78, S79 and S80 not included)
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Oke Nexrad Basin Avg 0.09 2.32 2.32
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Okeechobee Lake Elevations 30 OCT 2011 13.47 Difference from 30OCT11
30OCT11 -1 Day = 29 OCT 2011 13.42 -0.05
30OCT11 -2 Days = 28 OCT 2011 13.20 -0.27
30OCT11 -3 Days = 27 OCT 2011 13.13 -0.34
30OCT11 -4 Days = 26 OCT 2011 13.07 -0.40
30OCT11 -5 Days = 25 OCT 2011 12.99 -0.48
30OCT11 -6 Days = 24 OCT 2011 12.93 -0.54
30OCT11 -7 Days = 23 OCT 2011 12.85 -0.62
30OCT11 -30 Days = 30 SEP 2011 11.14 -2.33
30OCT11 -1 Year = 30 OCT 2010 13.50 0.03
30OCT11 -2 Year = 30 OCT 2009 14.09 0.62
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Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 3.29
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Lake Okeechobee Net Inflow (LONIN)
Average Flow over the previous 14 days | Avg-Daily Flow
30OCT11 Today = 30 OCT 2011 -NR- MON | -NR-
30OCT11 -1 Day = 29 OCT 2011 -NR- SUN | -NR-
30OCT11 -2 Days = 28 OCT 2011 -NR- SAT | -NR-
30OCT11 -3 Days = 27 OCT 2011 -NR- FRI | -NR-
30OCT11 -4 Days = 26 OCT 2011 -NR- THU | -NR-
30OCT11 -5 Days = 25 OCT 2011 -NR- WED | -NR-
30OCT11 -6 Days = 24 OCT 2011 -NR- TUE | -NR-
30OCT11 -7 Days = 23 OCT 2011 -NR- MON | -NR-
30OCT11 -8 Days = 22 OCT 2011 -NR- SUN | -NR-
30OCT11 -9 Days = 21 OCT 2011 -NR- SAT | -NR-
30OCT11 -10 Days = 20 OCT 2011 -NR- FRI | -NR-
30OCT11 -11 Days = 19 OCT 2011 -NR- THU | -NR-
30OCT11 -12 Days = 18 OCT 2011 -NR- WED | -NR-
30OCT11 -13 Days = 17 OCT 2011 -NR- TUE | -NR-
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S65E
Average Flow over previous 14 days | Avg-Daily Flow
30OCT11 Today= 30 OCT 2011 13525 MON | 7941
30OCT11 -1 Day = 29 OCT 2011 14209 SUN | 8608
30OCT11 -2 Days = 28 OCT 2011 14908 SAT | 9390
30OCT11 -3 Days = 27 OCT 2011 15555 FRI | 10626
30OCT11 -4 Days = 26 OCT 2011 16198 THU | 11558
30OCT11 -5 Days = 25 OCT 2011 16836 WED | 12960
30OCT11 -6 Days = 24 OCT 2011 17248 TUE | 14066
30OCT11 -7 Days = 23 OCT 2011 16830 MON | 14874
30OCT11 -8 Days = 22 OCT 2011 16045 SUN | 15695
30OCT11 -9 Days = 21 OCT 2011 15061 SAT | 16397
30OCT11 -10 Days = 20 OCT 2011 14014 FRI | 16270
30OCT11 -11 Days = 19 OCT 2011 13000 THU | 17154
30OCT11 -12 Days = 18 OCT 2011 11940 WED | 16568
30OCT11 -13 Days = 17 OCT 2011 10922 TUE | 17241
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Lake Okeechobee Outlets Last 14 Days
S-77 S-77 Below S-77 S-78 S-78 S-79
Discharge Discharge Discharge Discharge Discharge Discharge
(0700-2100) (ALL DAY) (ALL-DAY) (0700-2100) (ALL DAY) (ALL DAY)
DATE (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT)
30 OCT 2011 0 2 233 3095 4891 12836
29 OCT 2011 0 5 36 1456 2138 9352
28 OCT 2011 0 5 -175 286 488 2262
27 OCT 2011 0 5 -56 208 366 2882
26 OCT 2011 0 2 -69 208 363 2557
25 OCT 2011 0 5 86 206 368 3724
24 OCT 2011 0 3 179384 207 365 3716
23 OCT 2011 0 4 71 299 606 5963
22 OCT 2011 0 4 -21 550 1100 6771
21 OCT 2011 0 4 13 872 1784 8424
20 OCT 2011 0 4 -76 792 1506 10434
19 OCT 2011 0 1 135 837 1853 7034
18 OCT 2011 0 1 -115 1062 1605 5944
17 OCT 2011 0 1 49 335 542 2629
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)
30 OCT 2011 -687 0 -NR- 0 -980
29 OCT 2011 -467 0 -NR- 0 -668
28 OCT 2011 40 0 -NR- 0 138
27 OCT 2011 48 0 -NR- 0 100
26 OCT 2011 45 0 -NR- 0 -23
25 OCT 2011 14 0 -NR- 0 97
24 OCT 2011 ****** 0 -NR- 0 68445
23 OCT 2011 -6 0 -NR- 0 -22
22 OCT 2011 61 0 -NR- 0 18
21 OCT 2011 -207 0 -NR- 0 -110
20 OCT 2011 -323 0 -NR- 0 -323
19 OCT 2011 -315 0 -NR- 0 -301
18 OCT 2011 -417 0 -NR- 0 -207
17 OCT 2011 -406 0 -NR- 0 90
S-308 Below S-308 S-80
Discharge Discharge Discharge
(ALL DAY) (ALL-DAY) (ALL-DAY)
DATE (AC-FT) (AC-FT) (AC-FT)
30 OCT 2011 -486 -1661 36
29 OCT 2011 -294 -1520 15
28 OCT 2011 -53 -303 56
27 OCT 2011 -4 -222 55
26 OCT 2011 -1 128 14
25 OCT 2011 -282 -452 39
24 OCT 2011 -1 -16 18
23 OCT 2011 -241 -495 35
22 OCT 2011 -286 -615 33
21 OCT 2011 -519 -878 15
20 OCT 2011 -848 -1436 29
19 OCT 2011 -600 -1392 -NR-
18 OCT 2011 -4 -431 17
17 OCT 2011 -2 -79 13
*** 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.
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(I) - Flows preceeded by "I" signify an instantaneous
flow computed from the single value reported for the day
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* 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/Divisions/Operations/Branches/HydroSurvey/hydro.php
$ For information regarding Lake Okeechobee Service Area water restrictions
please refer to www.sfwmd.gov
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Report Generated 31OCT2011 @ 10:41 ** Preliminary Data - Subject to Revision **