U. S. Army Corps of Engineers, Jacksonville District
                       Lake Okeechobee and Vicinity Report
                   ** Preliminary Data - Subject to Revision **
 
Data Ending 2400 hours   19 JUL 2017
_____________________________________________________________________________
 
Okeechobee Lake Regulation      Elevation   Last Year  2YRS Ago
                                (ft-NGVD)   (ft-NGVD)  (ft-NGVD)
  *Okeechobee Lake Elevation       12.63       14.67    11.99 (Official Elv)
  Bottom of High Lake Mngmt= 16.23  Top of Water Short Mngmt= 11.49
  Currently in Operational Management Band
 
  Simulated Average LORS2008 [1965-2000]    12.53
  Difference from Average LORS2008          0.10
 
  19JUL (1965-2007) Period of Record Average    13.64
  Difference from POR Average                  -1.01
 
  Today Lake Okeechobee elevation is determined from the 4 Int & 4 Edge stations
 
  ++Navigation Depth (Based on 2007 Channel Condition Survey) Route 1 ÷  6.57'
  ++Navigation Depth (Based on 2008 Channel Condition Survey) Route 2 ÷  4.77'
  Bridge Clearance = 50.87'
______________________________________________________________________________
 
4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values):
 
  L001   L005   L006   LZ40   S4     S352   S308   S133
  12.54  12.65  12.62  12.60  12.63  12.80   12.59 12.60
 
 
 *Combination Okeechobee  Avg-Daily Lake Average =  12.63
                                                   (*See Note)
______________________________________________________________________________
 
Okeechobee Inflows (cfs):
  S65E              0      S65EX1         1248      Fisheating Cr   416
  S154              0      S191             47      S135 Pumps        0
  S84               0      S133 Pumps        0      S2 Pumps          0
  S84X            740      S127 Pumps        0      S3 Pumps          0
  S71             130      S129 Pumps        0      S4 Pumps          0
  S72             102      S131 Pumps        0      C5                0
Total Inflows:   2683
 
Okeechobee Outflows (cfs):
  S135 Culverts     0      S354              0      S77               1
  S127 Culverts     0      S351              0      S308           -265
  S129 Culverts  -NR-      S352              0
  S131 Culverts     2      L8 Canal Pt    -248
Total Outflows:   -509
 
****S77 structure flow is being used to compute Total Outflow.
****S308 below flow meter is being used to compute Total Outflow.
 
Okeechobee Pan Evaporation (inches):
  S77            0.23      S308           0.33
  Average Pan Evap x 0.75 Pan Coefficient =  0.21" =  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   5748 cfs or  11400 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:  12.97     12.58       0      0    0    0    0    0  (cfs)
  S193:       ______
  S191:        18.67     12.59      47    0.0  0.4  0.0
  S135 Pumps:  13.45     12.55       0      0    0    0    0       (cfs)
  S135 Culverts:                     0    0.0  0.0
 
North West Shore
  S65E:        21.07     12.76       0    0.0 -0.0  0.0  0.0  0.0  0.0
  S65EX1:      21.07     12.76    1248
  S127 Pumps:  12.91     12.70       0      0    0    0    0    0  (cfs)
  S127 Culvert:                      0    0.0
 
  S129 Pumps:  12.93     12.67       0      0    0    0            (cfs)
  S129 Culvert:                   -NR-    0.0
 
  S131 Pumps:  12.85     12.74       0      0    0                 (cfs)
  S131 Culvert:                      2
 
  Fisheating Creek
    nr Palmdale          31.94     416
    nr Lakeport         ______
  C5:         ______     -NR-        0     -NR- -NR- -NR-
 
South Shore
  S4 Pumps:    12.87     12.58       0      0    0    0            (cfs)
  S169:        12.68     12.79     -96    5.0  5.0  5.0
  S310:        12.70              -280
  S3 Pumps:     9.82     12.56       0      0    0    0            (cfs)
  S354:        12.56      9.82       0    0.0  0.0
  S2 Pumps:    10.65     12.65       0      0    0    0    0       (cfs)
  S351:        12.65     10.65       0    0.0  0.0  0.0
  S352:        12.81      9.27       0    0.0  0.0
  C10A:         -NR-     12.87            8.0   8.0   8.0   0.0   0.0
  L8 Canal PT            12.58    -248
 
  _________________________________________________________________________
                   S351 and S352 Temporary Pumps/S354 Spillway
 
  S351:        10.65     12.65       0  -NR--NR--NR--NR--NR--NR-
  S352:         9.27     12.81       0  -NR--NR--NR--NR-
  S354:         9.82     12.56       0  -NR--NR--NR--NR-
  _________________________________________________________________________
 
Caloosahatchee River (S77, S78, S79)
  S47B:        13.67     11.25            0.0  0.5
  S47D:        11.24     11.23      83    6.5
  S77:
    Spillway and Sector Flow:
               12.61     11.36    0.00  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:           1
 
  S77 Below USGS Flow Gage         -20
 
  S78:
    Spillway and Sector Flow:
                -NR-      -NR-    -NR-    1.0  0.0  0.0  1.0
    Flow Due to Lockages+:        -NR-
 
  S79:
    Spillway and Sector Flow:
                3.17      1.21    1513    0.0  0.0  1.0  1.0  1.0  1.0  1.0  0.0
    Flow Due to Lockages+:           2
    Percent of flow from S77         0%
    Chloride            (ppm)     55
 
 
St. Lucie Canal (S308, S80)
  S308:
    Spillway and Sector Flow:
               12.56     12.63  ******  2.0  2.0  2.0  2.0
    Flow Due to Lockages+:           0
 
  S308 Below USGS Flow Gage       -265
  S153:        18.61     12.49     112    0.3  0.2
  S80:
    Spillway and Sector Flow:
               12.70      0.67       0    0.0  0.0  0.0  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:          14
    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:                         0.02        0.57        1.11      176       0
  S78:                         0.03        0.13        0.53     -NR-    -NR-
  S79:                         0.25        1.60        1.69      182       3
  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        0.14        0.19      138       5
  S80:                         0.00        0.01        0.98        0       0
        Okeechobee Average     0.01        0.05        0.10
        (Sites S78, S79 and S80 not included)
  -----------------------------------------------------------------
  Oke Nexrad Basin Avg         -NR-        0.00        0.67
  -----------------------------------------------------------------
 
 
______________________________________________________________________________
Okeechobee Lake Elevations  19 JUL 2017           12.63 Difference from 19JUL17
   19JUL17  -1 Day  =       18 JUL 2017           12.60            -0.03
   19JUL17  -2 Days =       17 JUL 2017           12.58            -0.05
   19JUL17  -3 Days =       16 JUL 2017           12.56            -0.07
   19JUL17  -4 Days =       15 JUL 2017           12.54            -0.09
   19JUL17  -5 Days =       14 JUL 2017           12.53            -0.10
   19JUL17  -6 Days =       13 JUL 2017           12.49            -0.14
   19JUL17  -7 Days =       12 JUL 2017           12.46            -0.17
   19JUL17 -30 Days =       19 JUN 2017           12.15            -0.48
   19JUL17  -1 Year =       19 JUL 2016           14.67             2.04
   19JUL17  -2 Year =       19 JUL 2015           11.99            -0.64
______________________________________________________________________________
Long Term Mean 30day Avearge ET for Lake Alfred (Inches) =  4.48
______________________________________________________________________________
                         Lake Okeechobee Net Inflow (LONIN)
                   Average Flow over the previous 14 days  |  Avg-Daily Flow
   19JUL17    Today =       19 JUL 2017      2451  THU     |      5748
   19JUL17  -1 Day  =       18 JUL 2017      2321  WED     |      3933
   19JUL17  -2 Days =       17 JUL 2017      2321  TUE     |      3933
   19JUL17  -3 Days =       16 JUL 2017      2321  MON     |      4081
   19JUL17  -4 Days =       15 JUL 2017      2303  SUN     |      2571
   19JUL17  -5 Days =       14 JUL 2017      2256  SAT     |      7865
   19JUL17  -6 Days =       13 JUL 2017      1968  FRI     |      5899
   19JUL17  -7 Days =       12 JUL 2017      1684  THU     |         0
   19JUL17  -8 Days =       11 JUL 2017      2094  WED     |      1966
   19JUL17  -9 Days =       10 JUL 2017      2091  TUE     |      1966
   19JUL17 -10 Days =       09 JUL 2017      2261  MON     |         0
   19JUL17 -11 Days =       08 JUL 2017      2554  SUN     |     -1942
   19JUL17 -12 Days =       07 JUL 2017      2693  SAT     |       154
   19JUL17 -13 Days =       06 JUL 2017      2822  FRI     |     -1864
______________________________________________________________________________
______________________________________________________________________________
                                 S65E
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   19JUL17     Today=       19 JUL 2017         0  THU     |         0
   19JUL17  -1 Day  =       18 JUL 2017         0  WED     |         0
   19JUL17  -2 Days =       17 JUL 2017         0  TUE     |         0
   19JUL17  -3 Days =       16 JUL 2017         0  MON     |         0
   19JUL17  -4 Days =       15 JUL 2017         0  SUN     |         0
   19JUL17  -5 Days =       14 JUL 2017         0  SAT     |         0
   19JUL17  -6 Days =       13 JUL 2017         0  FRI     |         0
   19JUL17  -7 Days =       12 JUL 2017         0  THU     |         0
   19JUL17  -8 Days =       11 JUL 2017         0  WED     |         0
   19JUL17  -9 Days =       10 JUL 2017         0  TUE     |         0
   19JUL17 -10 Days =       09 JUL 2017         0  MON     |         0
   19JUL17 -11 Days =       08 JUL 2017         0  SUN     |         0
   19JUL17 -12 Days =       07 JUL 2017         0  SAT     |         0
   19JUL17 -13 Days =       06 JUL 2017         0  FRI     |         0
______________________________________________________________________________
______________________________________________________________________________
                                 S65EX1
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   19JUL17     Today=       19 JUL 2017       904   THU     |      1248
   19JUL17  -1 Day  =       18 JUL 2017       883   WED     |      1199
   19JUL17  -2 Days =       17 JUL 2017       883   TUE     |      1126
   19JUL17  -3 Days =       16 JUL 2017       899   MON     |      1081
   19JUL17  -4 Days =       15 JUL 2017       932   SUN     |      1076
   19JUL17  -5 Days =       14 JUL 2017       974   SAT     |      1025
   19JUL17  -6 Days =       13 JUL 2017      1027   FRI     |       862
   19JUL17  -7 Days =       12 JUL 2017      1094   THU     |       785
   19JUL17  -8 Days =       11 JUL 2017      1169   WED     |       681
   19JUL17  -9 Days =       10 JUL 2017      1250   TUE     |       659
   19JUL17 -10 Days =       09 JUL 2017      1322   MON     |       643
   19JUL17 -11 Days =       08 JUL 2017      1389   SUN     |       728
   19JUL17 -12 Days =       07 JUL 2017      1449   SAT     |       764
   19JUL17 -13 Days =       06 JUL 2017      1497   FRI     |       785
______________________________________________________________________________
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)
19 JUL 2017      3        -39        -NR-       2991
18 JUL 2017      4        -98        1316       3653
17 JUL 2017      6        -92        1326       3014
16 JUL 2017      2       -273        1340       3409
15 JUL 2017      3        -59        1094       3146
14 JUL 2017      3       -244         724       2819
13 JUL 2017      3       -163         711       2712
12 JUL 2017      2       -137         713       1857
11 JUL 2017      3        -74         557       1765
10 JUL 2017      1        -87         368       1834
09 JUL 2017      3       -153        -NR-       1168
08 JUL 2017     46        137          19       1237
07 JUL 2017    296        622          24        998
06 JUL 2017    210        182         222       1761
 
             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)
19 JUL 2017   -555          0         0           0       -493
18 JUL 2017   -449          0         0           0       -590
17 JUL 2017   -340          0         0           0       -588
16 JUL 2017   -235          0       299           0       -554
15 JUL 2017   -485          0      1067           0       -614
14 JUL 2017   -407          0         0           0       -763
13 JUL 2017   -194          0         0           0       -816
12 JUL 2017    237       -NR-         0           0       -593
11 JUL 2017    170          0         0           0       -625
10 JUL 2017    303          0         0           0       -700
09 JUL 2017    187          0         0           0       -744
08 JUL 2017    310          0         0           0       -731
07 JUL 2017    360          0         0           0       -798
06 JUL 2017    387          0         0           0       -957
 
             S-308    Below S-308    S-80
           Discharge   Discharge   Discharge
           (ALL DAY)   (ALL-DAY)   (ALL-DAY)
   DATE     (AC-FT)     (AC-FT)     (AC-FT)
19 JUL 2017   -814        -525          28
18 JUL 2017   -660        -482        -NR-
17 JUL 2017   -845        -384        -NR-
16 JUL 2017   -635        -437        -NR-
15 JUL 2017   -860        -495        -NR-
14 JUL 2017  -1310        -825        -NR-
13 JUL 2017   -NR-       -1016          10
12 JUL 2017  -1826        -762          25
11 JUL 2017  -1086        -638          28
10 JUL 2017   -827        -654          18
09 JUL 2017   -757        -502          28
08 JUL 2017   -351        -472          35
07 JUL 2017   -513        -391          42
06 JUL 2017  -1505        -521          28
 
***  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 20JUL2017 @ 16:38  ** Preliminary Data - Subject to Revision **