U. S. Army Corps of Engineers, Jacksonville District
Lake Okeechobee and Vicinity Report
** Preliminary Data - Subject to Revision **
Data Ending 2400 hours 18 JUN 2013
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Okeechobee Lake Regulation Elevation Last Year 2YRS Ago
(ft-NGVD) (ft-NGVD) (ft-NGVD)
*Okeechobee Lake Elevation 13.90 11.80 9.67 (Official Elv)
Bottom of High Lake Mngmt= 16.08 Top of Water Short Mngmt= 10.85
Currently in Operational Management Band
Simulated Average LORS2008 [1965-2000] 12.03
Difference from Average LORS2008 1.87
18JUN (1965-2007) Period of Record Average 13.19
Difference from POR Average 0.71
Today Lake Okeechobee elevation is determined from the 4 Int & 4 Edge stations
++Navigation Depth (Based on 2007 Channel Condition Survey) Route 1 ÷ 7.84'
++Navigation Depth (Based on 2008 Channel Condition Survey) Route 2 ÷ 6.04'
Bridge Clearance = 49.95'
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4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values):
L001 L005 L006 LZ40 S4 S352 S308 S133
13.80 13.81 13.86 13.98 13.86 14.06 13.81 13.97
*Combination Okeechobee Avg-Daily Lake Average = 13.90
(*See Note)
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Okeechobee Inflows (cfs):
S65E 1104 S191 195 Fisheating Cr 348
S154 0 S133 Pumps 0 S135 Pumps 0
S84 0 S127 Pumps 0 S2 Pumps 37
S71 133 S129 Pumps 0 S3 Pumps 0
S72 0 S131 Pumps 0 S4 Pumps 0
Total Inflows: 1817
Okeechobee Outflows (cfs):
S135 Culverts 0 S354 38 S77 2086 (Used)
S127 Culverts 0 S351 10 S77Below 2337 (NOT USED)
S129 Culverts 0 S352 0 S308 435 (Used)
S131 Culverts L8 Canal Pt -112 S308Below 379 (NOT USED)
C5 0
Total Outflows: 2456
****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 0.42 S308 0.42
Average Pan Evap x 0.75 Pan Coefficient = 0.31" = 0.03'
Lake Average Precipitation using NEXRAD: = 0.49" = 0.04'
Evaporation - Precipitation: = -0.18" = -0.01'
Evaporation - Precipitation using Lake Area of 730 square miles
is equal to 3435 cfs into the lake.
Lake Okeechobee (Change in Storage) Flow is -2118 cfs or -4200 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: 13.60 14.03 0 0 0 0 0 0 (cfs)
S193: ______
S191: 18.08 14.12 195 0.0 0.0 0.0
S135 Pumps: 13.43 13.87 0 0 0 0 0 (cfs)
S135 Culverts: 0 0.0 0.0
North West Shore
S65E: 20.95 13.67 1104 0.4 0.4 0.4 0.4 0.4 0.4
S127 Pumps: 13.61 14.02 0 0 0 0 0 0 (cfs)
S127 Culvert: 0 0.0
S129 Pumps: 12.98 13.92 0 0 0 0 (cfs)
S129 Culvert: 0 0.1
S131 Pumps: 12.89 14.00 0 0 0 (cfs)
S131 Culvert:
Fisheating Creek
nr Palmdale 32.16 348
nr Lakeport 14.36
C5: 15.96 13.82 0 0.0 0.0 0.0
South Shore
S4 Pumps: 10.93 13.73 0 0 0 0 (cfs)
S169: 13.76 10.94 0 0.0 0.0 0.0
S310: 13.68 5
S3 Pumps: 10.25 13.85 0 0 0 0 (cfs)
S354: 13.85 10.25 38 0.0 0.0
S2 Pumps: 10.11 13.90 37 37 0 0 0 (cfs)
S351: 13.90 10.11 10 0.0 0.0 0.0
S352: 14.12 10.67 0 0.0 0.0
C10A: -NR- -NR- 10.0 10.0 8.0 10.0 10.0
L8 Canal PT 14.15 -112
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S351 and S352 Temporary Pumps/S354 Spillway
S351: 10.11 13.90 10 -NR--NR--NR--NR--NR--NR-
S352: 10.67 14.12 0 -NR--NR--NR--NR-
S354: 10.25 13.85 38 -NR--NR--NR--NR-
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Caloosahatchee River (S77, S78, S79)
S47B: 13.34 11.01 0.0 0.0
S47D: 11.10 11.10 -NR- 4.5
S77:
Spillway and Sector Flow:
13.53 11.07 2082 2.5 3.0 3.0 2.5
Flow Due to Lockages+: 4
S77 Below USGS Flow Gage 2337
S78:
Spillway and Sector Flow:
11.20 2.83 1950 1.5 2.0 2.0 1.5
Flow Due to Lockages+: 11
S79:
Spillway and Sector Flow:
3.06 1.07 3213 1.5 1.5 1.5 2.0 2.0 2.0 1.5 1.5
Flow Due to Lockages+: 6
Percent of flow from S77 65%
Chloride (ppm) 57
St. Lucie Canal (S308, S80)
S308:
Spillway and Sector Flow:
13.97 13.55 434 0.0 2.5 2.5 0.0
Flow Due to Lockages+: 1
S308 Below USGS Flow Gage 379
S153: 18.98 13.43 74 0.0 0.0
S80:
Spillway and Sector Flow:
13.60 0.19 958 0.0 0.5 0.5 0.0 0.4 0.5 0.0
Flow Due to Lockages+: 23
Percent of flow from S308 45%
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.
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----- Wind ----
Daily Precipitation Totals 1-Day 3-Day 7-Day Direction Speed
(inches) (inches) (inches) (Degų) (mph)
S133 Pump Station: 0.10 0.10 0.11
S193: -NR- 0.00 0.00 -NR- -NR-
Okeechobee Field Station: -NR- 0.00 0.00
S135 Pump Station: 0.00 0.00 0.26
S127 Pump Station: 2.43 2.43 2.47
S129 Pump Station: 0.26 0.26 0.32
S131 Pump Station: 0.48 0.48 0.48
S77: 1.32 1.32 1.32 224 4
S78: 3.51 3.72 3.72 146 10
S79: 0.09 1.01 1.35 268 4
S4 Pump Station: -NR- 0.00 0.00
Clewiston Field Station: 0.37 0.37 0.37
S3 Pump Station: 0.00 0.00 0.00
S2 Pump Station: 0.00 0.00 0.06
S308: 0.00 0.00 0.09 167 12
S80: 0.00 0.02 0.02 194 0
Okeechobee Average 0.50 0.38 0.42
(Sites S78, S79 and S80 not included)
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Oke Nexrad Basin Avg 0.49 0.54 0.69
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Okeechobee Lake Elevations 18 JUN 2013 13.90 Difference from 18JUN13
18JUN13 -1 Day = 17 JUN 2013 13.91 0.01
18JUN13 -2 Days = 16 JUN 2013 13.92 0.02
18JUN13 -3 Days = 15 JUN 2013 13.94 0.04
18JUN13 -4 Days = 14 JUN 2013 13.94 0.04
18JUN13 -5 Days = 13 JUN 2013 13.94 0.04
18JUN13 -6 Days = 12 JUN 2013 13.92 0.02
18JUN13 -7 Days = 11 JUN 2013 13.90 0.00
18JUN13 -30 Days = 19 MAY 2013 13.36 -0.54
18JUN13 -1 Year = 18 JUN 2012 11.80 -2.10
18JUN13 -2 Year = 18 JUN 2011 9.67 -4.23
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Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 4.91
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Lake Okeechobee Net Inflow (LONIN)
Average Flow over the previous 14 days | Avg-Daily Flow
18JUN13 Today = 18 JUN 2013 7926 WED | 446
18JUN13 -1 Day = 17 JUN 2013 8085 TUE | -834
18JUN13 -2 Days = 16 JUN 2013 8630 MON | -3625
18JUN13 -3 Days = 15 JUN 2013 9406 SUN | 514
18JUN13 -4 Days = 14 JUN 2013 9770 SAT | 128
18JUN13 -5 Days = 13 JUN 2013 9940 FRI | 4235
18JUN13 -6 Days = 12 JUN 2013 9789 THU | 4235
18JUN13 -7 Days = 11 JUN 2013 9795 WED | 6353
18JUN13 -8 Days = 10 JUN 2013 9077 TUE | 6353
18JUN13 -9 Days = 09 JUN 2013 7909 MON | 14823
18JUN13 -10 Days = 08 JUN 2013 6413 SUN | 16940
18JUN13 -11 Days = 07 JUN 2013 4709 SAT | 29645
18JUN13 -12 Days = 06 JUN 2013 2807 FRI | 29255
18JUN13 -13 Days = 05 JUN 2013 889 THU | 2495
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S65E
Average Flow over previous 14 days | Avg-Daily Flow
18JUN13 Today= 18 JUN 2013 1700 WED | 1104
18JUN13 -1 Day = 17 JUN 2013 1642 TUE | 1120
18JUN13 -2 Days = 16 JUN 2013 1609 MON | 1629
18JUN13 -3 Days = 15 JUN 2013 1526 SUN | 1778
18JUN13 -4 Days = 14 JUN 2013 1436 SAT | 1933
18JUN13 -5 Days = 13 JUN 2013 1329 FRI | 1718
18JUN13 -6 Days = 12 JUN 2013 1244 THU | 2177
18JUN13 -7 Days = 11 JUN 2013 1128 WED | 1938
18JUN13 -8 Days = 10 JUN 2013 1037 TUE | 2482
18JUN13 -9 Days = 09 JUN 2013 908 MON | 1840
18JUN13 -10 Days = 08 JUN 2013 824 SUN | 1983
18JUN13 -11 Days = 07 JUN 2013 736 SAT | 1820
18JUN13 -12 Days = 06 JUN 2013 674 FRI | 1858
18JUN13 -13 Days = 05 JUN 2013 617 THU | 413
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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)
18 JUN 2013 2657 4136 4633 2606 3890 6384
17 JUN 2013 1169 1918 2343 899 1607 5571
16 JUN 2013 717 1212 1688 1300 2206 -NR-
15 JUN 2013 645 1025 1534 1284 2014 -NR-
14 JUN 2013 159 260 660 806 1377 -NR-
13 JUN 2013 0 10 331 754 1465 -NR-
12 JUN 2013 0 4 50 1112 1883 4825
11 JUN 2013 0 10 -87 1205 2165 4342
10 JUN 2013 0 12 -67 1545 3156 6133
09 JUN 2013 0 -NA- -3 2032 4455 9065
08 JUN 2013 0 15 -24 1718 4977 7826
07 JUN 2013 0 2 168 2979 -NR- 11693
06 JUN 2013 0 129 306 1571 3215 9860
05 JUN 2013 148 854 1207 1482 3271 5563
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)
18 JUN 2013 10 19 0 75 -223
17 JUN 2013 -2 0 0 0 -264
16 JUN 2013 7 0 0 0 -425
15 JUN 2013 -8 0 0 0 -556
14 JUN 2013 14 0 0 0 -552
13 JUN 2013 19 0 0 0 -827
12 JUN 2013 -16 0 0 0 -543
11 JUN 2013 -187 0 0 0 -777
10 JUN 2013 -366 0 0 0 -1303
09 JUN 2013 -394 0 0 0 -1519
08 JUN 2013 -388 0 0 0 -1257
07 JUN 2013 -357 0 0 0 -1133
06 JUN 2013 -238 0 0 0 -533
05 JUN 2013 -195 0 0 0 -159
S-308 Below S-308 S-80
Discharge Discharge Discharge
(ALL DAY) (ALL-DAY) (ALL-DAY)
DATE (AC-FT) (AC-FT) (AC-FT)
18 JUN 2013 863 751 1945
17 JUN 2013 632 627 1649
16 JUN 2013 0 135 1042
15 JUN 2013 0 41 803
14 JUN 2013 1 -295 1291
13 JUN 2013 0 -232 1626
12 JUN 2013 2 58 1165
11 JUN 2013 1 -221 1519
10 JUN 2013 2 164 1858
09 JUN 2013 0 439 -NR-
08 JUN 2013 -0 253 2902
07 JUN 2013 -2 -26 3621
06 JUN 2013 -2 -103 2302
05 JUN 2013 -5 101 1352
*** 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/
$ For information regarding Lake Okeechobee Service Area water restrictions
please refer to www.sfwmd.gov
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Report Generated 19JUN2013 @ 22:38 ** Preliminary Data - Subject to Revision **