U. S. Army Corps of Engineers, Jacksonville District
                       Lake Okeechobee and Vicinity Report
                   ** Preliminary Data - Subject to Revision **
 
Data Ending 2400 hours   23 APR 2015
_____________________________________________________________________________
 
Okeechobee Lake Regulation      Elevation   Last Year  2YRS Ago
                                (ft-NGVD)   (ft-NGVD)  (ft-NGVD)
  *Okeechobee Lake Elevation       13.71       13.24    13.57 (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          1.15
 
  23APR (1965-2007) Period of Record Average    13.78
  Difference from POR Average                  -0.07
 
  Today Lake Okeechobee elevation is determined from the 4 Int & 4 Edge stations
 
  ++Navigation Depth (Based on 2007 Channel Condition Survey) Route 1 ÷  7.65'
  ++Navigation Depth (Based on 2008 Channel Condition Survey) Route 2 ÷  5.85'
  Bridge Clearance = 49.44'
______________________________________________________________________________
 
4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values):
 
  L001   L005   L006   LZ40   S4     S352   S308   S133
  13.58  13.77  13.71  13.67  13.71  13.89   13.65 13.68
 
 
 *Combination Okeechobee  Avg-Daily Lake Average =  13.71
                                                   (*See Note)
______________________________________________________________________________
 
Okeechobee Inflows (cfs):
  S65E           -NR-      S191           -NR-      Fisheating Cr   444
  S154           -NR-      S133 Pumps     -NR-      S135 Pumps     -NR-
  S84            -NR-      S127 Pumps     -NR-      S2 Pumps       -NR-
  S71            -NR-      S129 Pumps     -NR-      S3 Pumps       -NR-
  S72            -NR-      S131 Pumps     -NR-      S4 Pumps       -NR-
  C5             -NR-
Total Inflows:  No Report Due To Missing S65E Discharge Data
 
Okeechobee Outflows (cfs):
  S135 Culverts  -NR-      S354           -NR-      S77             220 (Used)
  S127 Culverts  -NR-      S351           -NR-      S77Below        261 (NOT USED)
  S129 Culverts  -NR-      S352           -NR-      S308             -1 (Used)
  S131 Culverts            L8 Canal Pt     193      S308Below      -NR- (NOT USED)
Total Outflows:    412
 
****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            0.00      S308           0.28
  Average Pan Evap x 0.75 Pan Coefficient =  0.11" =  0.01'
 
Lake Average Precipitation using NEXRAD: =  1.21" =  0.10'
 
Evaporation - Precipitation:             = -1.11" = -0.09'
Evaporation - Precipitation using Lake Area of 730 square miles
  is equal to  21690 cfs into the lake.
Lake Okeechobee (Change in Storage) Flow is   4235 cfs or   8400 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: ______      -NR-    -NR-   -NR- -NR- -NR- -NR- -NR-  (cfs)
  S193:       ______
  S191:       ______      -NR-    -NR-   -NR- -NR- -NR-
  S135 Pumps: ______      -NR-    -NR-   -NR- -NR- -NR- -NR-       (cfs)
  S135 Culverts:                  -NR-   -NR- -NR-
 
North West Shore
  S65E:       ______      -NR-    -NR-   -NR- -NR- -NR- -NR- -NR- -NR-
  S127 Pumps: ______      -NR-    -NR-   -NR- -NR- -NR- -NR- -NR-  (cfs)
  S127 Culvert:                   -NR-   -NR-
 
  S129 Pumps: ______      -NR-    -NR-   -NR- -NR- -NR-            (cfs)
  S129 Culvert:                   -NR-   -NR-
 
  S131 Pumps: ______      -NR-    -NR-   -NR- -NR-                 (cfs)
  S131 Culvert:
 
  Fisheating Creek
    nr Palmdale          32.08     444
    nr Lakeport          13.73
  C5:         ______    13.69   -NR-   -NR- -NR- -NR-
 
South Shore
  S4 Pumps:   ______      -NR-    -NR-   -NR- -NR- -NR-            (cfs)
  S169:       ______      -NR-    -NR-   -NR- -NR- -NR-
  S310:        13.74               -49
  S3 Pumps:   ______      -NR-    -NR-   -NR- -NR- -NR-            (cfs)
  S354:         -NR-    ______    -NR-   -NR- -NR-
  S2 Pumps:   ______      -NR-    -NR-   -NR- -NR- -NR- -NR-       (cfs)
  S351:         -NR-    ______    -NR-   -NR- -NR- -NR-
  S352:       ______      -NR-    -NR-   -NR- -NR-
  C10A:         -NR-      -NR-            8.5   8.5   8.5   8.5   8.5
  L8 Canal PT            13.75     193
 
  _________________________________________________________________________
                   S351 and S352 Temporary Pumps/S354 Spillway
 
  S351:       ______      -NR-    -NR-  -NR--NR--NR--NR--NR--NR-
  S352:         -NR-    ______    -NR-  -NR--NR--NR--NR-
  S354:       ______      -NR-    -NR-  -NR--NR--NR--NR-
  _________________________________________________________________________
 
Caloosahatchee River (S77, S78, S79)
  S47B:       ______      -NR-           -NR- -NR-
  S47D:       ______      -NR-    -NR-   -NR-
  S77:
    Spillway and Sector Flow:
               13.40     11.28     216    0.5  0.5  0.5  0.5
    Flow Due to Lockages+:           4
 
  S77 Below USGS Flow Gage         261
 
  S78:
    Spillway and Sector Flow:
               11.10      2.92     698    0.0  0.0  1.0  1.0
    Flow Due to Lockages+:          14
 
  S79:
    Spillway and Sector Flow:
                3.15      1.28    1040    0.0  0.0  1.0  1.0  1.0  1.0  0.0  0.0
    Flow Due to Lockages+:           6
    Percent of flow from S77        21%
    Chloride            (ppm)     62
 
 
St. Lucie Canal (S308, S80)
  S308:
    Spillway and Sector Flow:
               13.71     14.06       0    0.0  0.0  0.0  0.0
    Flow Due to Lockages+:          -1
 
  S308 Below USGS Flow Gage       -NR-
  S153:       ______      -NR-    -NR-   -NR- -NR-
  S80:
    Spillway and Sector Flow:
               14.23      0.24       0    0.0  0.0  0.0  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:          29
    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:           0.68        0.71        2.29
  S193:                        -NR-        0.00        0.00     -NR-    -NR-
  Okeechobee Field Station:    -NR-        0.00        0.00
  S135 Pump Station:           0.03        0.07        0.60
  S127 Pump Station:           0.43        0.43        0.43
  S129 Pump Station:           0.55        0.62        0.68
  S131 Pump Station:           0.95        1.00        1.08
  S77:                         0.69        0.73        0.83      211       1
  S78:                         0.00        0.03        1.17      216       2
  S79:                         0.03        0.06        0.11      216       0
  S4 Pump Station:             -NR-        0.00        0.00
  Clewiston Field Station:     -NR-        0.00        0.00
  S3 Pump Station:             0.64        0.73        0.79
  S2 Pump Station:             1.15        1.21        1.45
  S308:                        0.10        0.12        0.45      190       9
  S80:                         0.00        0.05        0.05      261       4
        Okeechobee Average     0.58        0.43        0.66
        (Sites S78, S79 and S80 not included)
  -----------------------------------------------------------------
  Oke Nexrad Basin Avg         1.21        1.33        1.68
  -----------------------------------------------------------------
 
 
______________________________________________________________________________
Okeechobee Lake Elevations  23 APR 2015           13.71 Difference from 23APR15
   23APR15  -1 Day  =       22 APR 2015           13.69            -0.02
   23APR15  -2 Days =       21 APR 2015           13.69            -0.02
   23APR15  -3 Days =       20 APR 2015           13.68            -0.03
   23APR15  -4 Days =       19 APR 2015           13.70            -0.01
   23APR15  -5 Days =       18 APR 2015           13.70            -0.01
   23APR15  -6 Days =       17 APR 2015           13.68            -0.03
   23APR15  -7 Days =       16 APR 2015           13.66            -0.05
   23APR15 -30 Days =       24 MAR 2015           14.22             0.51
   23APR15  -1 Year =       23 APR 2014           13.24            -0.47
   23APR15  -2 Year =       23 APR 2013           13.57            -0.14
______________________________________________________________________________
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
   23APR15    Today =       23 APR 2015      2065  FRI     |      -NR-
   23APR15  -1 Day  =       22 APR 2015      1580  THU     |      1059
   23APR15  -2 Days =       21 APR 2015      1188  WED     |      4067
   23APR15  -3 Days =       20 APR 2015       748  TUE     |     -3005
   23APR15  -4 Days =       19 APR 2015       834  MON     |      -NR-
   23APR15  -5 Days =       18 APR 2015       682  SUN     |      5848
   23APR15  -6 Days =       17 APR 2015       164  SAT     |      5817
   23APR15  -7 Days =       16 APR 2015      -391  FRI     |      4980
   23APR15  -8 Days =       15 APR 2015      -886  THU     |      1510
   23APR15  -9 Days =       14 APR 2015     -1156  WED     |      -933
   23APR15 -10 Days =       13 APR 2015     -1091  TUE     |      3272
   23APR15 -11 Days =       12 APR 2015     -1458  MON     |      -423
   23APR15 -12 Days =       11 APR 2015     -2054  SUN     |      2220
   23APR15 -13 Days =       10 APR 2015     -2738  SAT     |       368
______________________________________________________________________________
______________________________________________________________________________
                                 S65E
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   23APR15     Today=       23 APR 2015      1599  FRI     |      -NR-
   23APR15  -1 Day  =       22 APR 2015      1569  THU     |      2323
   23APR15  -2 Days =       21 APR 2015      1511  WED     |      2499
   23APR15  -3 Days =       20 APR 2015      1428  TUE     |      1921
   23APR15  -4 Days =       19 APR 2015      1370  MON     |      1652
   23APR15  -5 Days =       18 APR 2015      1335  SUN     |      1462
   23APR15  -6 Days =       17 APR 2015      1312  SAT     |      1404
   23APR15  -7 Days =       16 APR 2015      1292  FRI     |      1635
   23APR15  -8 Days =       15 APR 2015      1252  THU     |      1578
   23APR15  -9 Days =       14 APR 2015      1216  WED     |      1382
   23APR15 -10 Days =       13 APR 2015      1191  TUE     |      1384
   23APR15 -11 Days =       12 APR 2015      1184  MON     |      1185
   23APR15 -12 Days =       11 APR 2015      1165  SUN     |      1184
   23APR15 -13 Days =       10 APR 2015      1175  SAT     |      1176
______________________________________________________________________________
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)
23 APR 2015    346       437        517        822       1412       2075
22 APR 2015    212     -NA-         748        923       2164       3169
21 APR 2015   1187      1787       1826       2158       3648       5174
20 APR 2015    584       712        983       2141       3795       5250
19 APR 2015      0         6        827       3052       4742       5315
18 APR 2015      0         7        820       2984       4902       5548
17 APR 2015     10       290        903       2917       3945       6660
16 APR 2015    671      1217       1190        834       1443       2260
15 APR 2015    901     -NA-        1243        821       1410       2552
14 APR 2015    633      1775       1630        634       1660       4067
13 APR 2015   1178      2860       2614       1138       2776       3603
12 APR 2015   1695      4011       3859       1440       3542       5005
11 APR 2015   2161      4724       4467       1921       4210       5605
10 APR 2015   2162     -NA-        3638       1902       3414       3953
 
             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 2015    -96       -NR-      -NR-        -NR-        382
22 APR 2015   -198         69       129         694        294
21 APR 2015   -220        615       932         236        301
20 APR 2015   -253       1069       280           0        384
19 APR 2015   -292       2330         1        -NR-        422
18 APR 2015   -487       2598       175           0        426
17 APR 2015   -491       1759       668           0        430
16 APR 2015   -289       2614      1003         412        434
15 APR 2015     49       2784      1105        1174        433
14 APR 2015     17       2423       652        1027        426
13 APR 2015      1       1864       272         857        432
12 APR 2015      2       1636       242        1097        428
11 APR 2015     -5       1918       228        1077        422
10 APR 2015     17       2647       311        1362        450
 
             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 2015     -2        -NR-          58
22 APR 2015     -3         103          67
21 APR 2015     -1        -259          42
20 APR 2015      0         -90          44
19 APR 2015      1        -343          55
18 APR 2015      0        -259          58
17 APR 2015    -42        -192          63
16 APR 2015      2        -124          57
15 APR 2015  -NA-          153          56
14 APR 2015    254         252          64
13 APR 2015    208         230          52
12 APR 2015    159         250          61
11 APR 2015    247         260          78
10 APR 2015    353         344          42
 
***  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 24APR2015 @ 20:13  ** Preliminary Data - Subject to Revision **