oke
               U. S. Army Corps of Engineers, Jacksonville District
                       Lake Okeechobee and Vicinity Report
                   ** Preliminary Data - Subject to Revision **
 
Data Ending 2400 hours   17 DEC 2017
_____________________________________________________________________________
 
Okeechobee Lake Regulation      Elevation   Last Year  2YRS Ago
                                (ft-NGVD)   (ft-NGVD)  (ft-NGVD)
  *Okeechobee Lake Elevation       15.73       14.54    14.80 (Official Elv)
  Bottom of High Lake Mngmt= 17.25  Top of Water Short Mngmt= 12.27
  Currently in Operational Management Band
 
  Simulated Average LORS2008 [1965-2000]    13.62
  Difference from Average LORS2008          2.11
 
  17DEC (1965-2007) Period of Record Average    14.71
  Difference from POR Average                   1.02
 
  Today Lake Okeechobee elevation is determined from the 4 Int & 4 Edge stations
 
  ++Navigation Depth (Based on 2007 Channel Condition Survey) Route 1 ÷  9.67'
  ++Navigation Depth (Based on 2008 Channel Condition Survey) Route 2 ÷  7.87'
  Bridge Clearance = 49.50'
______________________________________________________________________________
 
4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values):
 
  L001   L005   L006   LZ40   S4     S352   S308   S133
  15.69  15.75  15.75  15.69  15.78  15.85   15.68 15.64
 
 
 *Combination Okeechobee  Avg-Daily Lake Average =  15.73
                                                   (*See Note)
______________________________________________________________________________
 
Okeechobee Inflows (cfs):
  S65E              0      S65EX1          836      Fisheating Cr   123
  S154             37      S191             42      S135 Pumps        0
  S84               0      S133 Pumps        0      S2 Pumps          0
  S84X              0      S127 Pumps        0      S3 Pumps          0
  S71             134      S129 Pumps        0      S4 Pumps          0
  S72               0      S131 Pumps        0      C5                0
Total Inflows:   1171
 
Okeechobee Outflows (cfs):
  S135 Culverts     0      S354              0      S77            3210
  S127 Culverts     0      S351              0      S308           1860
  S129 Culverts     0      S352              0
  S131 Culverts     0      L8 Canal Pt       7
Total Outflows:   5078
 
****S77 below flow meter is being used to compute Total Outflow.
****S308 structure flow is being used to compute Total Outflow.
 
Okeechobee Pan Evaporation (inches):
  S77            0.16      S308           0.14
  Average Pan Evap x 0.75 Pan Coefficient =  0.11" =  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  -4336 cfs or  -8600 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:  13.75     15.65       0      0    0    0    0    0  (cfs)
  S193:       ______
  S191:        19.54     15.64      42    0.0  0.0  0.1
  S135 Pumps:  13.51     15.59       0      0    0    0    0       (cfs)
  S135 Culverts:                     0    0.0  0.0
 
North West Shore
  S65E:        21.14     15.49       0    0.0  0.0  0.0  0.0  0.0  0.0
  S65EX1:      21.14     15.49     836
  S127 Pumps:  13.69     15.70       0      0    0    0    0    0  (cfs)
  S127 Culvert:                      0    0.0
 
  S129 Pumps:  13.07     15.73       0      0    0    0            (cfs)
  S129 Culvert:                      0    0.0
 
  S131 Pumps:  12.95     15.75       0      0    0                 (cfs)
  S131 Culvert:                      0
 
  Fisheating Creek
    nr Palmdale          30.81     123
    nr Lakeport         ______
  C5:         ______     -NR-        0     -NR- -NR- -NR-
 
South Shore
  S4 Pumps:    11.03     15.74       0      0    0    0            (cfs)
  S169:        14.37     11.02       0    0.0  0.0  0.0
  S310:        15.66                 2
  S3 Pumps:     9.68     15.73       0      0    0    0            (cfs)
  S354:        15.73      9.68       0    0.0  0.0
  S2 Pumps:     9.49     15.75       0      0    0    0    0       (cfs)
  S351:        15.75      9.49       0    0.0  0.0  0.0
  S352:        15.82      9.51       0    0.0  0.0
  C10A:         -NR-     12.58            8.0   8.0   8.0   0.0   0.0
  L8 Canal PT            12.40       7
 
  _________________________________________________________________________
                   S351 and S352 Temporary Pumps/S354 Spillway
 
  S351:         9.49     15.75       0  -NR--NR--NR--NR--NR--NR-
  S352:         9.51     15.82       0  -NR--NR--NR--NR-
  S354:         9.68     15.73       0  -NR--NR--NR--NR-
  _________________________________________________________________________
 
Caloosahatchee River (S77, S78, S79)
  S47B:        14.87     10.90            0.0  0.0
  S47D:        10.94     10.93      91    6.6
  S77:
    Spillway and Sector Flow:
               15.58     11.01  ******  2.5  2.5  2.5  2.5
    Flow Due to Lockages+:           6
 
  S77 Below USGS Flow Gage        3204
 
  S78:
    Spillway and Sector Flow:
               10.73      2.99    3019    1.0  3.5  3.5  1.0
    Flow Due to Lockages+:          10
 
  S79:
    Spillway and Sector Flow:
                3.05      1.53    4068    0.0  1.0  2.0  2.0  2.0  2.0  2.0  2.0
    Flow Due to Lockages+:           8
    Percent of flow from S77        79%
    Chloride            (ppm)     40
 
 
St. Lucie Canal (S308, S80)
  S308:
    Spillway and Sector Flow:
               15.68     14.00  ******  1.9  1.9  1.9  1.9
    Flow Due to Lockages+:           4
 
  S308 Below USGS Flow Gage       1575
  S153:        19.09     13.78      26    0.5  0.0
  S80:
    Spillway and Sector Flow:
               13.52      0.94    1567    1.5  0.0  0.0  1.0  0.0  0.0  1.5
    Flow Due to Lockages+:          26
    Percent of flow from S308      118%
 
  Steele Point Top Salinity    (mg/ml) ****
  Steele Point Bottom Salinity (mg/ml) ****
 
  Speedy Point Top Salinity    (mg/ml) 8672
  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:                         0.00        0.00        0.07       88       3
  S78:                         0.00        0.00        0.00       87       2
  S79:                         0.00        0.00        0.00      216       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:                        0.00        0.00        0.00      176       1
  S80:                         0.00        0.00        0.00        5       0
        Okeechobee Average     0.00        0.00        0.01
        (Sites S78, S79 and S80 not included)
  -----------------------------------------------------------------
  Oke Nexrad Basin Avg         -NR-        0.00        0.00
  -----------------------------------------------------------------
 
 
______________________________________________________________________________
Okeechobee Lake Elevations  17 DEC 2017           15.73 Difference from 17DEC17
   17DEC17  -1 Day  =       16 DEC 2017           15.75             0.02
   17DEC17  -2 Days =       15 DEC 2017           15.78             0.05
   17DEC17  -3 Days =       14 DEC 2017           15.79             0.06
   17DEC17  -4 Days =       13 DEC 2017           15.80             0.07
   17DEC17  -5 Days =       12 DEC 2017           15.84             0.11
   17DEC17  -6 Days =       11 DEC 2017           15.85             0.12
   17DEC17  -7 Days =       10 DEC 2017           15.88             0.15
   17DEC17 -30 Days =       17 NOV 2017           16.55             0.82
   17DEC17  -1 Year =       17 DEC 2016           14.54            -1.19
   17DEC17  -2 Year =       17 DEC 2015           14.80            -0.93
______________________________________________________________________________
Long Term Mean 30day Avearge ET for Lake Alfred (Inches) =  2.09
______________________________________________________________________________
                         Lake Okeechobee Net Inflow (LONIN)
                   Average Flow over the previous 14 days  |  Avg-Daily Flow
   17DEC17    Today =       17 DEC 2017    766480  MON     |       731
   17DEC17  -1 Day  =       16 DEC 2017    766404  SUN     |     -1943
   17DEC17  -2 Days =       15 DEC 2017    766498  SAT     |       489
   17DEC17  -3 Days =       14 DEC 2017    766287  FRI     |      -381
   17DEC17  -4 Days =       13 DEC 2017    766227  THU     |     -6389
   17DEC17  -5 Days =       12 DEC 2017    766440  WED     |       639
   17DEC17  -6 Days =       11 DEC 2017    766351  TUE     |     -3145
   17DEC17  -7 Days =       10 DEC 2017    766314  MON     |      -478
   17DEC17  -8 Days =       09 DEC 2017    766072  SUN     |     12715
   17DEC17  -9 Days =       08 DEC 2017    764882  SAT     |     11138
   17DEC17 -10 Days =       07 DEC 2017    764285  FRI     |     -2321
   17DEC17 -11 Days =       06 DEC 2017    764642  THU     |     -2012
   17DEC17 -12 Days =       05 DEC 2017    764988  WED     |    ******
   17DEC17 -13 Days =       04 DEC 2017      -412  TUE     |     -1140
______________________________________________________________________________
______________________________________________________________________________
                                 S65E
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   17DEC17     Today=       17 DEC 2017        42  MON     |         0
   17DEC17  -1 Day  =       16 DEC 2017        96  SUN     |         0
   17DEC17  -2 Days =       15 DEC 2017       159  SAT     |         0
   17DEC17  -3 Days =       14 DEC 2017       237  FRI     |         0
   17DEC17  -4 Days =       13 DEC 2017       319  THU     |         0
   17DEC17  -5 Days =       12 DEC 2017       406  WED     |        23
   17DEC17  -6 Days =       11 DEC 2017       495  TUE     |         0
   17DEC17  -7 Days =       10 DEC 2017       591  MON     |         0
   17DEC17  -8 Days =       09 DEC 2017       690  SUN     |         0
   17DEC17  -9 Days =       08 DEC 2017       790  SAT     |         0
   17DEC17 -10 Days =       07 DEC 2017       894  FRI     |         0
   17DEC17 -11 Days =       06 DEC 2017      1000  THU     |         0
   17DEC17 -12 Days =       05 DEC 2017      1105  WED     |         0
   17DEC17 -13 Days =       04 DEC 2017      1201  TUE     |       558
______________________________________________________________________________
______________________________________________________________________________
                                 S65EX1
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   17DEC17     Today=       17 DEC 2017       727   MON     |       836
   17DEC17  -1 Day  =       16 DEC 2017       667   SUN     |       815
   17DEC17  -2 Days =       15 DEC 2017       609   SAT     |       863
   17DEC17  -3 Days =       14 DEC 2017       547   FRI     |       916
   17DEC17  -4 Days =       13 DEC 2017       482   THU     |       913
   17DEC17  -5 Days =       12 DEC 2017       416   WED     |       847
   17DEC17  -6 Days =       11 DEC 2017       356   TUE     |       837
   17DEC17  -7 Days =       10 DEC 2017       296   MON     |       780
   17DEC17  -8 Days =       09 DEC 2017       240   SUN     |       921
   17DEC17  -9 Days =       08 DEC 2017       175   SAT     |       550
   17DEC17 -10 Days =       07 DEC 2017       143   FRI     |       564
   17DEC17 -11 Days =       06 DEC 2017       110   THU     |       532
   17DEC17 -12 Days =       05 DEC 2017        82   WED     |       598
   17DEC17 -13 Days =       04 DEC 2017        62   TUE     |       201
______________________________________________________________________________
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)
17 DEC 2017   6267       6353        5989       8055
16 DEC 2017   6798       6716        6596       9030
15 DEC 2017   3830       3433        4005       6002
14 DEC 2017   2518       2264        1988       2912
13 DEC 2017   3274       3073        3434       4969
12 DEC 2017   3715       3537        3938       4840
11 DEC 2017   4061       4194        4935       6712
10 DEC 2017   4287       4789        6179       7794
09 DEC 2017   5174       5484        6015       8913
08 DEC 2017   6376       6634        6568       7351
07 DEC 2017   8187       8485        7938      10283
06 DEC 2017   8237       8323        7919      10643
05 DEC 2017   8217     ******        7983       9595
04 DEC 2017   8228       8671        8057       9766
 
             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)
17 DEC 2017      3       -NR-         0           0         14
16 DEC 2017      8       -NR-         0           0         27
15 DEC 2017     12       -NR-         0           0          5
14 DEC 2017     27       -NR-         0           0          4
13 DEC 2017     13       -NR-         0           0         -2
12 DEC 2017      4       -NR-         0           0          5
11 DEC 2017     12       -NR-         0           0         10
10 DEC 2017    212       -NR-         0           0          8
09 DEC 2017     76       -NR-         0           0         59
08 DEC 2017     12       -NR-         0           0          6
07 DEC 2017     99       -NR-         0           0         15
06 DEC 2017    178       -NR-        99         452          9
05 DEC 2017     31     147208       676         652         23
04 DEC 2017     18     254197       301         682         21
 
             S-308    Below S-308    S-80
           Discharge   Discharge   Discharge
           (ALL DAY)   (ALL-DAY)   (ALL-DAY)
   DATE     (AC-FT)     (AC-FT)     (AC-FT)
17 DEC 2017   3667        3123        3156
16 DEC 2017   3052        2301        3246
15 DEC 2017   2527        1830        2471
14 DEC 2017   1972        1277        2256
13 DEC 2017   2012        1452        1822
12 DEC 2017   2920        2023        2248
11 DEC 2017   3447        2457        2709
10 DEC 2017   3858        2854        3097
09 DEC 2017   3477        2474        3273
08 DEC 2017   3379        2550        2876
07 DEC 2017   4102        3247        3532
06 DEC 2017   4097        3626        3531
05 DEC 2017   4035        -NR-        3555
04 DEC 2017   4116        -NR-        3593
 
***  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 18DEC2017 @ 09:15  ** Preliminary Data - Subject to Revision **