U. S. Army Corps of Engineers, Jacksonville District
                       Lake Okeechobee and Vicinity Report
                   ** Preliminary Data - Subject to Revision **
 
Data Ending 2400 hours   28 MAY 2015
_____________________________________________________________________________
 
Okeechobee Lake Regulation      Elevation   Last Year  2YRS Ago
                                (ft-NGVD)   (ft-NGVD)  (ft-NGVD)
  *Okeechobee Lake Elevation       12.81       12.49    13.27 (Official Elv)
  Bottom of High Lake Mngmt= 16.08  Top of Water Short Mngmt= 10.54
  Currently in Operational Management Band
 
  Simulated Average LORS2008 [1965-2000]    11.96
  Difference from Average LORS2008          0.85
 
  28MAY (1965-2007) Period of Record Average    13.14
  Difference from POR Average                  -0.33
 
  Today Lake Okeechobee elevation is determined from the 4 Int & 4 Edge stations
 
  ++Navigation Depth (Based on 2007 Channel Condition Survey) Route 1 ÷  6.75'
  ++Navigation Depth (Based on 2008 Channel Condition Survey) Route 2 ÷  4.95'
  Bridge Clearance = 51.11'
______________________________________________________________________________
 
4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values):
 
  L001   L005   L006   LZ40   S4     S352   S308   S133
  12.62  13.02  12.87  12.79  13.04  12.80   12.63 12.69
 
 
 *Combination Okeechobee  Avg-Daily Lake Average =  12.81
                                                   (*See Note)
______________________________________________________________________________
 
Okeechobee Inflows (cfs):
  S65E            318      S191              0      Fisheating Cr     5
  S154              0      S133 Pumps        0      S135 Pumps        0
  S84               0      S127 Pumps        0      S2 Pumps          0
  S71               0      S129 Pumps        0      S3 Pumps          0
  S72               0      S131 Pumps        0      S4 Pumps          0
  C5                0
Total Inflows:    323
 
Okeechobee Outflows (cfs):
  S135 Culverts  -NR-      S354           1170      S77            1267 (Used)
  S127 Culverts     0      S351           1593      S77Below       1031 (NOT USED)
  S129 Culverts     0      S352            856      S308              0 (Used)
  S131 Culverts            L8 Canal Pt     168      S308Below        71 (NOT USED)
Total Outflows:   5054
 
****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            0.29      S308           0.15
  Average Pan Evap x 0.75 Pan Coefficient =  0.16" =  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 -11495 cfs or -22800 AC-FT
______________________________________________________________________________
______________________________________________________________________________
 
 
 
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:  13.01     12.70       0      0    0    0    0    0  (cfs)
  S193:       ______
  S191:        18.23     12.68       0    0.0  0.0  0.0
  S135 Pumps: ______      -NR-       0      0    0    0    0       (cfs)
  S135 Culverts:                  -NR-   -NR- -NR-
 
North West Shore
  S65E:        21.09     12.73     318    0.0  0.3  0.4  0.0  0.0  0.0
  S127 Pumps:  13.32     12.77       0      0    0    0    0    0  (cfs)
  S127 Culvert:                      0    0.0
 
  S129 Pumps:  13.16     13.00       0      0    0    0            (cfs)
  S129 Culvert:                      0    0.1
 
  S131 Pumps:  13.05     13.08       0      0    0                 (cfs)
  S131 Culvert:
 
  Fisheating Creek
    nr Palmdale          28.42       5
    nr Lakeport          13.06
  C5:          13.11    13.13      0    0.0  0.1  0.0
 
South Shore
  S4 Pumps:    10.85     13.01       0      0    0    0            (cfs)
  S169:        13.02     10.83       0    0.0  0.0  0.0
  S310:        12.95                82
  S3 Pumps:    11.49     12.93       0      0    0    0            (cfs)
  S354:        12.93     11.49    1170    3.6  3.6
  S2 Pumps:    11.19     12.76       0      0    0    0    0       (cfs)
  S351:        12.76     11.19    1593    3.4  3.4  3.4
  S352:        12.74     11.22     856    2.3  2.6
  C10A:         -NR-     12.85            8.5   8.5   8.5   8.5   8.5
  L8 Canal PT            12.68     168
 
  _________________________________________________________________________
                   S351 and S352 Temporary Pumps/S354 Spillway
 
  S351:        11.19     12.76    1593  -NR--NR--NR--NR--NR--NR-
  S352:        11.22     12.74     856  -NR--NR--NR--NR-
  S354:        11.49     12.93    1170  -NR--NR--NR--NR-
  _________________________________________________________________________
 
Caloosahatchee River (S77, S78, S79)
  S47B:        14.95     11.06            0.5  0.5
  S47D:        11.18     11.18     -25    4.8
  S77:
    Spillway and Sector Flow:
               12.72     11.20    1263    0.0  3.5  4.0  0.0
    Flow Due to Lockages+:           4
 
  S77 Below USGS Flow Gage        1031
 
  S78:
    Spillway and Sector Flow:
               11.01      3.01     696    0.0  0.0  1.0  1.0
    Flow Due to Lockages+:          19
 
  S79:
    Spillway and Sector Flow:
                3.14      0.72     660    0.0  0.0  1.0  0.5  0.5  0.0  0.0  0.0
    Flow Due to Lockages+:          10
    Percent of flow from S77       191%
    Chloride            (ppm)     64
 
 
St. Lucie Canal (S308, S80)
  S308:
    Spillway and Sector Flow:
               12.62     12.39       0    0.0  0.0  0.0  0.0
    Flow Due to Lockages+:           0
 
  S308 Below USGS Flow Gage         71
  S153:       ______      -NR-    -NR-    0.0 -NR-
  S80:
    Spillway and Sector Flow:
                -NR-      -NR-    -NR-    0.0  0.0  0.0  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:        -NR-
    Percent of flow from S308     -NR-%
 
  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:           0.00        0.00        0.13
  S193:                        -NR-        0.00        0.00     -NR-    -NR-
  Okeechobee Field Station:    -NR-        0.00        0.00
  S135 Pump Station:           0.00        0.00        0.00
  S127 Pump Station:           0.00        0.02        0.38
  S129 Pump Station:           0.00        0.00        0.03
  S131 Pump Station:           0.00        0.00        0.39
  S77:                         0.00        0.00        0.84      110       2
  S78:                         0.00        0.00        0.00       25       2
  S79:                         0.00        0.00        0.31      131       3
  S4 Pump Station:             -NR-        0.00        0.00
  Clewiston Field Station:     -NR-        0.00        0.00
  S3 Pump Station:             0.00        0.00        0.00
  S2 Pump Station:             0.00        0.00        0.01
  S308:                        0.00        0.00        0.03       55       2
  S80:                         0.00        0.00        0.18     -NR-    -NR-
        Okeechobee Average     0.00        0.00        0.14
        (Sites S78, S79 and S80 not included)
  -----------------------------------------------------------------
  Oke Nexrad Basin Avg         -NR-        0.00        0.48
  -----------------------------------------------------------------
 
 
______________________________________________________________________________
Okeechobee Lake Elevations  28 MAY 2015           12.81 Difference from 28MAY15
   28MAY15  -1 Day  =       27 MAY 2015           12.87             0.06
   28MAY15  -2 Days =       26 MAY 2015           12.94             0.13
   28MAY15  -3 Days =       25 MAY 2015           12.99             0.18
   28MAY15  -4 Days =       24 MAY 2015           13.02             0.21
   28MAY15  -5 Days =       23 MAY 2015           13.05             0.24
   28MAY15  -6 Days =       22 MAY 2015           13.08             0.27
   28MAY15  -7 Days =       21 MAY 2015           13.12             0.31
   28MAY15 -30 Days =       28 APR 2015           13.77             0.96
   28MAY15  -1 Year =       28 MAY 2014           12.49            -0.32
   28MAY15  -2 Year =       28 MAY 2013           13.27             0.46
______________________________________________________________________________
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
   28MAY15    Today =       28 MAY 2015     -4321  FRI     |     -6445
   28MAY15  -1 Day  =       27 MAY 2015     -4113  THU     |     -8431
   28MAY15  -2 Days =       26 MAY 2015     -3629  WED     |     -5382
   28MAY15  -3 Days =       25 MAY 2015     -3541  TUE     |     -2551
   28MAY15  -4 Days =       24 MAY 2015     -3460  MON     |     -2558
   28MAY15  -5 Days =       23 MAY 2015     -3648  SUN     |     -1808
   28MAY15  -6 Days =       22 MAY 2015     -3718  SAT     |     -3385
   28MAY15  -7 Days =       21 MAY 2015     -3251  FRI     |     -4967
   28MAY15  -8 Days =       20 MAY 2015     -3119  THU     |     -6670
   28MAY15  -9 Days =       19 MAY 2015     -2444  WED     |     -2947
   28MAY15 -10 Days =       18 MAY 2015     -2241  TUE     |     -3245
   28MAY15 -11 Days =       17 MAY 2015     -2194  MON     |     -2687
   28MAY15 -12 Days =       16 MAY 2015     -2191  SUN     |     -4508
   28MAY15 -13 Days =       15 MAY 2015     -2216  SAT     |     -4904
______________________________________________________________________________
______________________________________________________________________________
                                 S65E
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   28MAY15     Today=       28 MAY 2015       381  FRI     |       318
   28MAY15  -1 Day  =       27 MAY 2015       391  THU     |       266
   28MAY15  -2 Days =       26 MAY 2015       407  WED     |       377
   28MAY15  -3 Days =       25 MAY 2015       431  TUE     |       437
   28MAY15  -4 Days =       24 MAY 2015       485  MON     |       407
   28MAY15  -5 Days =       23 MAY 2015       545  SUN     |       500
   28MAY15  -6 Days =       22 MAY 2015       628  SAT     |       243
   28MAY15  -7 Days =       21 MAY 2015       750  FRI     |       449
   28MAY15  -8 Days =       20 MAY 2015       773  THU     |       510
   28MAY15  -9 Days =       19 MAY 2015       937  WED     |       467
   28MAY15 -10 Days =       18 MAY 2015      1120  TUE     |       541
   28MAY15 -11 Days =       17 MAY 2015      1318  MON     |       201
   28MAY15 -12 Days =       16 MAY 2015      1543  SUN     |       161
   28MAY15 -13 Days =       15 MAY 2015      1768  SAT     |       455
______________________________________________________________________________
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)
28 MAY 2015   1487     -NA-        2045        821       1417       1329
27 MAY 2015   1511     -NA-        2141        822       1417       1602
26 MAY 2015   1456     -NA-        1862        804       1526       2044
25 MAY 2015   1275     -NA-        1509       1166       1989       2551
24 MAY 2015   1536     -NA-        2242       1220       2472       4489
23 MAY 2015   2338     -NA-        3546       2043       3473       5908
22 MAY 2015   2481     -NA-        3338       1960       -NR-       3700
21 MAY 2015   1586     -NA-        2330        856       1691       2038
20 MAY 2015   2176     -NA-        3118       1440       2456       2842
19 MAY 2015   1669     -NA-        3033       1168       2582       2933
18 MAY 2015   1599      3727       3458       1177       2954       3849
17 MAY 2015   2139      4781       4719       1704       4109       5036
16 MAY 2015   2374      5023       4955       2208       4664       5788
15 MAY 2015   2014     -NA-        2913       1935       3400       4595
 
             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)
28 MAY 2015    162       3159      1697        2320        333
27 MAY 2015    182       2976      1662        2384        381
26 MAY 2015    177       2481      1202        2048        337
25 MAY 2015     78       1906       605        1878        299
24 MAY 2015     62       1547       666        1666        246
23 MAY 2015    139       1606       637        1888        279
22 MAY 2015    179       2372      1412        2011        285
21 MAY 2015    177       3109      1818        1983        395
20 MAY 2015    183       3056      1495        1753        388
19 MAY 2015    119       2445      1229        1703        351
18 MAY 2015     79       1949      1081        1624        352
17 MAY 2015    108       2017       956        1642        342
16 MAY 2015    114       2411      1269        1920        396
15 MAY 2015    156       2647      1329        1993        376
 
             S-308    Below S-308    S-80
           Discharge   Discharge   Discharge
           (ALL DAY)   (ALL-DAY)   (ALL-DAY)
   DATE     (AC-FT)     (AC-FT)     (AC-FT)
28 MAY 2015      1         141        -NR-
27 MAY 2015    298         405         107
26 MAY 2015    325         415         340
25 MAY 2015    433         538         562
24 MAY 2015    461         562         898
23 MAY 2015    566         564        1030
22 MAY 2015  -NA-           55         378
21 MAY 2015  -NA-          485         350
20 MAY 2015  -NA-         1051        1158
19 MAY 2015  -NA-         1282        1383
18 MAY 2015   1637        1817        1824
17 MAY 2015   1738        1951        2276
16 MAY 2015   1048        1809        2220
15 MAY 2015    976        1289        1411
 
***  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.
______________________________________________________________________________
 
(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 29MAY2015 @ 21:40  ** Preliminary Data - Subject to Revision **