oke
               U. S. Army Corps of Engineers, Jacksonville District
                       Lake Okeechobee and Vicinity Report
                   ** Preliminary Data - Subject to Revision **
 
Data Ending 2400 hours   23 APR 2018
_____________________________________________________________________________
 
Okeechobee Lake Regulation      Elevation   Last Year  2YRS Ago
                                (ft-NGVD)   (ft-NGVD)  (ft-NGVD)
  *Okeechobee Lake Elevation       13.24       11.78    14.51 (Official Elv)
  Bottom of High Lake Mngmt= 16.80  Top of Water Short Mngmt= 11.12
  Currently in Operational Management Band
 
  Simulated Average LORS2008 [1965-2000]    12.56
  Difference from Average LORS2008          0.68
 
  23APR (1965-2007) Period of Record Average    13.78
  Difference from POR Average                  -0.55
 
  Today Lake Okeechobee elevation is determined from the 4 Int & 4 Edge stations
 
  ++Navigation Depth (Based on 2007 Channel Condition Survey) Route 1 ÷  7.18'
  ++Navigation Depth (Based on 2008 Channel Condition Survey) Route 2 ÷  5.38'
  Bridge Clearance = 50.40'
______________________________________________________________________________
 
4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values):
 
  L001   L005   L006   LZ40   S4     S352   S308   S133
  13.32  13.36  13.17  13.15  13.18  13.26   13.15 13.30
 
 
 *Combination Okeechobee  Avg-Daily Lake Average =  13.24
                                                   (*See Note)
______________________________________________________________________________
 
Okeechobee Inflows (cfs):
  S65E              0      S65EX1          346      Fisheating Cr     2
  S154              0      S191              0      S135 Pumps        0
  S84               0      S133 Pumps        0      S2 Pumps          0
  S84X            389      S127 Pumps        0      S3 Pumps          0
  S71              54      S129 Pumps        0      S4 Pumps          0
  S72              64      S131 Pumps        0      C5                0
Total Inflows:    854
 
Okeechobee Outflows (cfs):
  S135 Culverts     0      S354            367      S77             577
  S127 Culverts     0      S351             52      S308             14
  S129 Culverts     0      S352            214
  S131 Culverts     0      L8 Canal Pt     -14
Total Outflows:   1210
 
****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            0.18      S308           0.28
  Average Pan Evap x 0.75 Pan Coefficient =  0.17" =  0.01'
 
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:  13.66     12.98       0      0    0    0    0    0  (cfs)
  S193:       ______
  S191:        18.22     13.09       0    0.0  0.0  0.0
  S135 Pumps:  12.87     13.21       0      0    0    0    0       (cfs)
  S135 Culverts:                     0    0.0  0.0
 
North West Shore
  S65E:        21.13     13.20       0    0.0  0.0  0.0  0.0  0.0  0.0
  S65EX1:      21.13     13.20     346
  S127 Pumps:  12.93     13.29       0      0    0    0    0    0  (cfs)
  S127 Culvert:                      0    0.0
 
  S129 Pumps:  12.80     13.36       0      0    0    0            (cfs)
  S129 Culvert:                      0    0.0
 
  S131 Pumps:  12.83     13.27       0      0    0                 (cfs)
  S131 Culvert:                      0
 
  Fisheating Creek
    nr Palmdale          28.11       2
    nr Lakeport         ______
  C5:         ______     -NR-        0     -NR- -NR- -NR-
 
South Shore
  S4 Pumps:    11.51     13.06       0      0    0    0            (cfs)
  S169:        13.13     11.51       0    0.0  0.0  0.0
  S310:        13.09               -12
  S3 Pumps:    10.48     13.03       0      0    0    0            (cfs)
  S354:        13.03     10.48     367    1.4  1.4
  S2 Pumps:    10.45     13.19       0      0    0    0    0       (cfs)
  S351:        13.19     10.45      52    0.0  0.1  0.0
  S352:        13.32     10.21     214    1.0  1.0
  C10A:         -NR-     13.48            8.0   8.0   8.0   0.0   0.0
  L8 Canal PT            13.36     -14
 
  _________________________________________________________________________
                   S351 and S352 Temporary Pumps/S354 Spillway
 
  S351:        10.45     13.19      52  -NR--NR--NR--NR--NR--NR-
  S352:        10.21     13.32     214  -NR--NR--NR--NR-
  S354:        10.48     13.03     367  -NR--NR--NR--NR-
  _________________________________________________________________________
 
Caloosahatchee River (S77, S78, S79)
  S47B:        12.77     11.42            0.0  0.0
  S47D:        11.41     11.42     -20    6.6
  S77:
    Spillway and Sector Flow:
               13.26     11.32  574.00  0.0  0.0  0.5  0.0
    Flow Due to Lockages+:           3
 
  S77 Below USGS Flow Gage         827
 
  S78:
    Spillway and Sector Flow:
                -NR-      3.13    -NR-    1.0  0.0  0.0  0.0
    Flow Due to Lockages+:        -NR-
 
  S79:
    Spillway and Sector Flow:
                3.29      2.05    1010    0.0  0.0  0.0  0.0  1.0  1.0  1.0  0.0
    Flow Due to Lockages+:           8
    Percent of flow from S77        57%
    Chloride            (ppm)     55
 
 
St. Lucie Canal (S308, S80)
  S308:
    Spillway and Sector Flow:
               13.31     13.10   14.00  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:           0
 
  S308 Below USGS Flow Gage         56
  S153:        18.76     12.93       0    0.0  0.0
  S80:
    Spillway and Sector Flow:
               13.22     -0.12       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.
______________________________________________________________________________
                                                               ----- 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:                         1.35        1.59        1.59      162       3
  S78:                         4.00        5.45        5.45      144       2
  S79:                       -43.97      -42.33      -42.33      270       0
  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:                        0.09        0.09        0.09      108       4
  S80:                         0.00        0.00        0.00      194       2
        Okeechobee Average     0.72        0.13        0.13
        (Sites S78, S79 and S80 not included)
  -----------------------------------------------------------------
  Oke Nexrad Basin Avg         -NR-        0.00        0.00
  -----------------------------------------------------------------
 
 
______________________________________________________________________________
Okeechobee Lake Elevations  23 APR 2018           13.24 Difference from 23APR18
   23APR18  -1 Day  =       22 APR 2018           13.22            -0.02
   23APR18  -2 Days =       21 APR 2018           13.23            -0.01
   23APR18  -3 Days =       20 APR 2018           13.27             0.03
   23APR18  -4 Days =       19 APR 2018           13.31             0.07
   23APR18  -5 Days =       18 APR 2018           13.34             0.10
   23APR18  -6 Days =       17 APR 2018           13.36             0.12
   23APR18  -7 Days =       16 APR 2018           13.41             0.17
   23APR18 -30 Days =       24 MAR 2018           14.10             0.86
   23APR18  -1 Year =       23 APR 2017           11.78            -1.46
   23APR18  -2 Year =       23 APR 2016           14.51             1.27
______________________________________________________________________________
Long Term Mean 30day Avearge ET for Lake Alfred (Inches) =  4.41
______________________________________________________________________________
                         Lake Okeechobee Net Inflow (LONIN)
                   Average Flow over the previous 14 days  |  Avg-Daily Flow
   23APR18    Today =       23 APR 2018     -2501  TUE     |      5456
   23APR18  -1 Day  =       22 APR 2018     -2817  MON     |      1016
   23APR18  -2 Days =       21 APR 2018     -3175  SUN     |     -4387
   23APR18  -3 Days =       20 APR 2018     -2896  SAT     |     -5110
   23APR18  -4 Days =       19 APR 2018     -2723  FRI     |     -3477
   23APR18  -5 Days =       18 APR 2018     -2970  THU     |     -1626
   23APR18  -6 Days =       17 APR 2018     -3164  WED     |     -8612
   23APR18  -7 Days =       16 APR 2018     -2592  TUE     |     -2331
   23APR18  -8 Days =       15 APR 2018     -2528  MON     |      1691
   23APR18  -9 Days =       14 APR 2018     -2783  SUN     |     -2789
   23APR18 -10 Days =       13 APR 2018     -2672  SAT     |     -3914
   23APR18 -11 Days =       12 APR 2018     -2489  FRI     |     -7286
   23APR18 -12 Days =       11 APR 2018     -1906  THU     |     -1140
   23APR18 -13 Days =       10 APR 2018     -1983  WED     |      -NR-
______________________________________________________________________________
______________________________________________________________________________
                                 S65E
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   23APR18     Today=       23 APR 2018        16  TUE     |         0
   23APR18  -1 Day  =       22 APR 2018        24  MON     |         0
   23APR18  -2 Days =       21 APR 2018        33  SUN     |         0
   23APR18  -3 Days =       20 APR 2018        42  SAT     |         0
   23APR18  -4 Days =       19 APR 2018        54  FRI     |         0
   23APR18  -5 Days =       18 APR 2018        66  THU     |         0
   23APR18  -6 Days =       17 APR 2018        79  WED     |         0
   23APR18  -7 Days =       16 APR 2018        91  TUE     |         0
   23APR18  -8 Days =       15 APR 2018       104  MON     |         0
   23APR18  -9 Days =       14 APR 2018       116  SUN     |         0
   23APR18 -10 Days =       13 APR 2018       131  SAT     |         0
   23APR18 -11 Days =       12 APR 2018       148  FRI     |         0
   23APR18 -12 Days =       11 APR 2018       166  THU     |        91
   23APR18 -13 Days =       10 APR 2018       176  WED     |       126
______________________________________________________________________________
______________________________________________________________________________
                                 S65EX1
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   23APR18     Today=       23 APR 2018       327   TUE     |       346
   23APR18  -1 Day  =       22 APR 2018       316   MON     |       293
   23APR18  -2 Days =       21 APR 2018       308   SUN     |       294
   23APR18  -3 Days =       20 APR 2018       300   SAT     |       295
   23APR18  -4 Days =       19 APR 2018       290   FRI     |       279
   23APR18  -5 Days =       18 APR 2018       281   THU     |       302
   23APR18  -6 Days =       17 APR 2018       270   WED     |       379
   23APR18  -7 Days =       16 APR 2018       254   TUE     |       387
   23APR18  -8 Days =       15 APR 2018       237   MON     |       482
   23APR18  -9 Days =       14 APR 2018       214   SUN     |       389
   23APR18 -10 Days =       13 APR 2018       197   SAT     |       391
   23APR18 -11 Days =       12 APR 2018       179   FRI     |       278
   23APR18 -12 Days =       11 APR 2018       167   THU     |       268
   23APR18 -13 Days =       10 APR 2018       156   WED     |       196
______________________________________________________________________________
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 APR 2018   1120       1639        -NR-       1991
22 APR 2018   3674       3412        2222       2497
21 APR 2018   4544       3612        1802       2822
20 APR 2018   3389       2522        2401       2069
19 APR 2018   2243       1984         625        199
18 APR 2018   1752       1555         613        572
17 APR 2018    375        597         602        821
16 APR 2018    827       1168         961       1686
15 APR 2018   2077       2176        1801       2216
14 APR 2018   3120       2865        2188       3056
13 APR 2018   3092       2221        2097       2114
12 APR 2018    442        734         240         22
11 APR 2018   1466       1360         618        160
10 APR 2018   2217       1796         613        691
 
             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 APR 2018    -23        103       361         557        -27
22 APR 2018     46        734         0         831        238
21 APR 2018     61        935        61        1503        348
20 APR 2018    112        746       684        1547        419
19 APR 2018    157        560       785        1342        420
18 APR 2018    102        360       678        1120        389
17 APR 2018     35        365       716        1218        332
16 APR 2018     53          0       512         968        492
15 APR 2018     80        242       145         228        395
14 APR 2018    297        462       777        1043        404
13 APR 2018    279          0       329         758        492
12 APR 2018    232         98         5         773        406
11 APR 2018    139       1752       525        1267        442
10 APR 2018    111        455        22         486        479
 
             S-308    Below S-308    S-80
           Discharge   Discharge   Discharge
           (ALL DAY)   (ALL-DAY)   (ALL-DAY)
   DATE     (AC-FT)     (AC-FT)     (AC-FT)
23 APR 2018      0         112          40
22 APR 2018    538         577          38
21 APR 2018    488         167          53
20 APR 2018   1013         417          30
19 APR 2018      1         -11          48
18 APR 2018    515         262          55
17 APR 2018    498          86          41
16 APR 2018    507         -67          54
15 APR 2018    751         198          30
14 APR 2018    576         519          80
13 APR 2018   1354         513          68
12 APR 2018    348         219          59
11 APR 2018    288        -130          57
10 APR 2018   -NR-        -152          37
 
***  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 24APR2018 @ 08:38  ** Preliminary Data - Subject to Revision **