oke
               U. S. Army Corps of Engineers, Jacksonville District
                       Lake Okeechobee and Vicinity Report
                   ** Preliminary Data - Subject to Revision **
 
Data Ending 2400 hours   25 JUL 2021
_____________________________________________________________________________
 
Okeechobee Lake Regulation      Elevation   Last Year  2YRS Ago
                                (ft-NGVD)   (ft-NGVD)  (ft-NGVD)
  *Okeechobee Lake Elevation       13.53       12.91    11.51 (Official Elv)
  Bottom of High Lake Mngmt= 16.25  Top of Water Short Mngmt= 11.62
  Currently in Operational Management Band
 
  Simulated Average LORS2008 [1965-2000]    12.61
  Difference from Average LORS2008          0.92
 
  25JUL (1965-2007) Period of Record Average    13.71
  Difference from POR Average                  -0.18
 
  Today Lake Okeechobee elevation is determined from the 4 Int & 4 Edge stations
 
  ++Navigation Depth (Based on 2007 Channel Condition Survey) Route 1 ÷  7.47'
  ++Navigation Depth (Based on 2008 Channel Condition Survey) Route 2 ÷  5.67'
  Bridge Clearance = 49.46'
______________________________________________________________________________
 
4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values):
 
  L001   L005   L006   LZ40   S4     S352   S308   S133
  13.52  13.60  13.46  13.50  13.54  13.63   13.52 13.48
 
 
 *Combination Okeechobee  Avg-Daily Lake Average =  13.53
                                                   (*See Note)
______________________________________________________________________________
 
Okeechobee Inflows (cfs):
  S65E           1346      S65EX1            0      Fisheating Cr   192
  S154             33      S191              0      S135 Pumps      164
  S84             736      S133 Pumps       34      S2 Pumps          0
  S84X            297      S127 Pumps       36      S3 Pumps          0
  S71             662      S129 Pumps        0      S4 Pumps          0
  S72             203      S131 Pumps       23      C5                0
Total Inflows:   3725
 
Okeechobee Outflows (cfs):
  S135 Culverts     0      S354              0      S77               5
  S127 Culverts     0      S351              0      S308            -81
  S129 Culverts     0      S352              0
  S131 Culverts     0      L8 Canal Pt    -NR-
Total Outflows:    -76
 
****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            0.30      S308           0.30
  Average Pan Evap x 0.75 Pan Coefficient =  0.23" =  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   4235 cfs or   8400 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:  13.29     13.67      34      0    0    0    0    0  (cfs)
  S193:       ______
  S191:        18.28     13.68       0    0.0  0.0  0.0
  S135 Pumps:  13.39     13.58     164   -NR- -NR- -NR- -NR-       (cfs)
  S135 Culverts:                     0    0.0  0.0
 
North West Shore
  S65E:        21.11     13.70    1346    1.1  0.4  0.5  0.5  1.0 -0.0
  S65EX1:      21.11     13.70       0
  S127 Pumps:  13.41     13.59      36      0   36    0    0    0  (cfs)
  S127 Culvert:                      0    0.0
 
  S129 Pumps:  13.00     13.56       0      0    0    0            (cfs)
  S129 Culvert:                      0    0.0
 
  S131 Pumps:  12.85     13.62      23     25    0                 (cfs)
  S131 Culvert:                      0
 
  Fisheating Creek
    nr Palmdale          31.64     192
    nr Lakeport         ______
  C5:         ______     -NR-        0     -NR- -NR- -NR-
 
South Shore
  S4 Pumps:    11.23     13.38       0      0    0    0            (cfs)
  S169:       ______      -NR-    -NR-   -NR- -NR- -NR-
  S310:        13.41               -16
  S3 Pumps:     9.71     13.39       0      0    0    0            (cfs)
  S354:        13.39      9.71       0    0.0  0.0
  S2 Pumps:    10.07      -NR-       0   -NR- -NR- -NR- -NR-       (cfs)
  S351:         -NR-     10.07       0    0.0  0.0  0.0
  S352:        13.64     10.53       0    0.0  0.0
  C10A:         -NR-     13.46            8.0   8.0   8.0   0.0   0.0
  L8 Canal PT           ______    -NR-
 
  _________________________________________________________________________
                   S351 and S352 Temporary Pumps/S354 Spillway
 
  S351:        10.07      -NR-       0  -NR--NR--NR--NR--NR--NR-
  S352:        10.53     13.64       0  -NR--NR--NR--NR-
  S354:         9.71     13.39       0  -NR--NR--NR--NR-
  _________________________________________________________________________
 
Caloosahatchee River (S77, S78, S79)
  S47B:        13.22     12.01            1.0  1.5
  S47D:        12.06     11.21       0    0.0
  S77:
    Spillway and Sector Preferred Flow:
               13.37     11.09       0  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:           5
 
  S78:
    Spillway and Sector Flow:
               11.12      3.07     485    0.0  0.0  0.0  1.0
    Flow Due to Lockages+:          14
 
  S79:
    Spillway and Sector Flow:
                3.28      1.26    1676    1.0  1.0  1.0  0.0  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:           6
    Percent of flow from S77         0%
    Chloride            (ppm)      0
 
 
St. Lucie Canal (S308, S80)
  S308:
    Spillway and Sector Preferred Flow:
               13.56     14.04     -80  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:          -1
 
  S153:        19.07     13.69       0    0.0  0.0
  S80:
    Spillway and Sector Flow:
               13.94      1.94       0    0.0  0.0  0.0  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:          20
    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        1.68        2.57      155       6
  S78:                         0.00        1.94        2.80      171       1
  S79:                         0.17        0.62        0.64      338       5
  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:                        0.00        0.77        1.12      146       4
  S80:                         0.00        0.93        1.01      161       2
        Okeechobee Average     0.00        0.19        0.28
        (Sites S78, S79 and S80 not included)
  -----------------------------------------------------------------
  Oke Nexrad Basin Avg         -NR-        0.00        0.00
  -----------------------------------------------------------------
 
 
______________________________________________________________________________
Okeechobee Lake Elevations  25 JUL 2021           13.53 Difference from 25JUL21
   25JUL21  -1 Day  =       24 JUL 2021           13.51            -0.02
   25JUL21  -2 Days =       23 JUL 2021           13.50            -0.03
   25JUL21  -3 Days =       22 JUL 2021           13.49            -0.04
   25JUL21  -4 Days =       21 JUL 2021           13.48            -0.05
   25JUL21  -5 Days =       20 JUL 2021           13.48            -0.05
   25JUL21  -6 Days =       19 JUL 2021           13.47            -0.06
   25JUL21  -7 Days =       18 JUL 2021           13.47            -0.06
   25JUL21 -30 Days =       25 JUN 2021           12.65            -0.88
   25JUL21  -1 Year =       25 JUL 2020           12.91            -0.62
   25JUL21  -2 Year =       25 JUL 2019           11.51            -2.02
______________________________________________________________________________
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
   25JUL21    Today =       25 JUL 2021      3626  MON     |      4235
   25JUL21  -1 Day  =       24 JUL 2021      3777  SUN     |      2362
   25JUL21  -2 Days =       23 JUL 2021      4213  SAT     |      2395
   25JUL21  -3 Days =       22 JUL 2021      4353  FRI     |      2245
   25JUL21  -4 Days =       21 JUL 2021      4995  THU     |       149
   25JUL21  -5 Days =       20 JUL 2021      5798  WED     |      2700
   25JUL21  -6 Days =       19 JUL 2021      7812  TUE     |       250
   25JUL21  -7 Days =       18 JUL 2021      8992  MON     |      4377
   25JUL21  -8 Days =       17 JUL 2021      8957  SUN     |      2310
   25JUL21  -9 Days =       16 JUL 2021      8953  SAT     |        54
   25JUL21 -10 Days =       15 JUL 2021      9244  FRI     |      4134
   25JUL21 -11 Days =       14 JUL 2021      9674  THU     |     10487
   25JUL21 -12 Days =       13 JUL 2021      9934  WED     |     10588
   25JUL21 -13 Days =       12 JUL 2021      9629  TUE     |      4473
______________________________________________________________________________
______________________________________________________________________________
                                 S65E
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   25JUL21     Today=       25 JUL 2021      1383  MON     |      1509
   25JUL21  -1 Day  =       24 JUL 2021      1368  SUN     |      1510
   25JUL21  -2 Days =       23 JUL 2021      1353  SAT     |      1508
   25JUL21  -3 Days =       22 JUL 2021      1326  FRI     |      1542
   25JUL21  -4 Days =       21 JUL 2021      1315  THU     |      1631
   25JUL21  -5 Days =       20 JUL 2021      1286  WED     |      1593
   25JUL21  -6 Days =       19 JUL 2021      1256  TUE     |      1334
   25JUL21  -7 Days =       18 JUL 2021      1235  MON     |      1312
   25JUL21  -8 Days =       17 JUL 2021      1223  SUN     |      1330
   25JUL21  -9 Days =       16 JUL 2021      1200  SAT     |      1319
   25JUL21 -10 Days =       15 JUL 2021      1185  FRI     |      1354
   25JUL21 -11 Days =       14 JUL 2021      1156  THU     |      1386
   25JUL21 -12 Days =       13 JUL 2021      1124  WED     |       788
   25JUL21 -13 Days =       12 JUL 2021      1130  TUE     |      1242
______________________________________________________________________________
______________________________________________________________________________
                                 S65EX1
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   25JUL21     Today=       25 JUL 2021        51   MON     |         0
   25JUL21  -1 Day  =       24 JUL 2021        51   SUN     |         0
   25JUL21  -2 Days =       23 JUL 2021        51   SAT     |         0
   25JUL21  -3 Days =       22 JUL 2021        51   FRI     |         0
   25JUL21  -4 Days =       21 JUL 2021        51   THU     |         0
   25JUL21  -5 Days =       20 JUL 2021        51   WED     |         0
   25JUL21  -6 Days =       19 JUL 2021        51   TUE     |         0
   25JUL21  -7 Days =       18 JUL 2021        51   MON     |         0
   25JUL21  -8 Days =       17 JUL 2021        51   SUN     |         0
   25JUL21  -9 Days =       16 JUL 2021        51   SAT     |         0
   25JUL21 -10 Days =       15 JUL 2021        51   FRI     |         0
   25JUL21 -11 Days =       14 JUL 2021        51   THU     |         0
   25JUL21 -12 Days =       13 JUL 2021        51   WED     |       621
   25JUL21 -13 Days =       12 JUL 2021         7   TUE     |        95
______________________________________________________________________________
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)
25 JUL 2021      9        174         970       3196
24 JUL 2021      7        225         907       3994
23 JUL 2021      4         90         468       2664
22 JUL 2021      7        376        1066       4292
21 JUL 2021      5        485        1283       4341
20 JUL 2021      4        234        1378       5174
19 JUL 2021    390        780        1739       4364
18 JUL 2021    342        501        1881       5261
17 JUL 2021    344        842        2547       6308
16 JUL 2021      4        632        3661       7531
15 JUL 2021      4        750        3788       8686
14 JUL 2021      5        690        3145       7468
13 JUL 2021   -NR-        619        2371       5388
12 JUL 2021    343       1026        1897       4283
 
             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)
25 JUL 2021    -31          0         0           0       -NR-
24 JUL 2021    -50          0       484           0       -NR-
23 JUL 2021      1         89       560           0       -NR-
22 JUL 2021    -62         90       264           0       -NR-
21 JUL 2021    -26        295         0           0       -NR-
20 JUL 2021     17        754       362           0       -NR-
19 JUL 2021     15          0         0           0       -NR-
18 JUL 2021    -99          0         0           0       -NR-
17 JUL 2021   -115          0         0           0       -NR-
16 JUL 2021   -189          0         0           0       -NR-
15 JUL 2021   -191          0         0           0       -NR-
14 JUL 2021   -218          0         0           0       -NR-
13 JUL 2021   -108          0         0           0       -NR-
12 JUL 2021   -NR-          0         0           0       -NR-
 
             S-308    Below S-308    S-80
           Discharge   Discharge   Discharge
           (ALL DAY)   (ALL-DAY)   (ALL-DAY)
   DATE     (AC-FT)     (AC-FT)     (AC-FT)
25 JUL 2021   -158        -139          40
24 JUL 2021     -0          32          40
23 JUL 2021      1        -238          37
22 JUL 2021     -0         -27          34
21 JUL 2021     -0        -166          15
20 JUL 2021     -1        -229          34
19 JUL 2021   -214        -351          65
18 JUL 2021   -372        -391          15
17 JUL 2021   -524        -731          34
16 JUL 2021     -1         220        -NR-
15 JUL 2021   -279        -134          55
14 JUL 2021   -504        -437          19
13 JUL 2021  -1046       -1440          27
12 JUL 2021   -577        -690          31
 
***  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 26JUL2021 @ 13:15  ** Preliminary Data - Subject to Revision **