U. S. Army Corps of Engineers, Jacksonville District
                       Lake Okeechobee and Vicinity Report
 
Data Ending 2400 hours   13 APR 2008
_____________________________________________________________________________
 
Okeechobee Lake Regulation      Elevation   Last Year  2YRS Ago
                                (ft-NGVD)   (ft-NGVD)  (ft-NGVD)
  *Okeechobee Lake Elevation       10.50       10.05    14.15 (Official Elv)
  Regulation Zone Elevations    B=  -NR-    C= 16.90   D= 15.99     E= 13.90
 
  13APR (1965-2006) Period of Record Average    14.10
  Difference from POR Average                  -3.60
 
  Simulated Average LORSS2007 TSP[1965-2000]    12.77
  Difference from Average LORSS2007 TSP        -2.27
 
  Today Lake Okechobee elevation is determined from the 4 interior stations
 
  ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷  4.44'
                                                               Route 2 ÷  1.84'
  Bridge Clearance = 52.90'
______________________________________________________________________________
 
4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values):
                                     (BAD)
  L001   L005   L006   LZ40   S4     S352   S308   S133
  10.30  10.40  10.61  10.68  10.68  10.87   10.55 10.45
 
 *Combination Okeechobee  Avg-Daily Lake Average =  10.57
                                                   (*See Note)
 
Interior Okeechobee Lake Average (Avg-Daily values):
  L001   L005   L006   LZ40
  10.30  10.40  10.61  10.68
 
 *Interior Okeechobee Avg-Daily Lake Average =    10.50
                                                 (*See Note)
 
Okeechobee Lake Average (Avg-Daily values):
               (BAD)  (BAD)   (BAD)                       (BAD)  (BAD)
  C5     S4     S3     S2     S352   S308   S135   S133   S127   S129
  10.59  10.68  10.83  10.76  10.87   10.55 10.52  10.45  11.11  11.78
 
 *Edge Okeechobee Avg-Daily Lake Average =        10.81
                                                 (*See Note)
 
______________________________________________________________________________
 
Okeechobee Inflows (cfs):
  S65E           1863      S191            276      Fisheating Cr  -NR-
  S154              0      S133 Pumps        0      S135 Pumps        0
  S84               0      S127 Pumps        0      S2 Pumps          0
  S71             201      S129 Pumps        0      S3 Pumps          0
  S72              50      S131 Pumps        0      S4 Pumps          0
Total Inflows:   2390
 
Okeechobee Outflows (cfs):
  S135 Culverts     0      S354           -NR-      S77            -277
  S127 Culverts  -NR-      S351           -NR-      S308    (BAD)     0
  S129 Culverts     0      S352              0
  S131 Culverts            L8 Canal Pt    -624
  C5             -NR-
Total Outflows:  -901 (BAD VALUE)
 
Okeechobee Pan Evaporation (inches):
  S77            0.13      S308           0.25
  Average Pan Evap x 0.75 Pan Coefficient =  0.14" =  0.01'
 
Lake Average Precipitation using NEXRAD: =  0.05" =  0.00'
 
Evaporation - Precipitation:             =  0.09" =  0.01'
Evaporation - Precipitation using Lake Area of 730 square miles
  is equal to   1816 cfs out of the lake.
Lake Okeechobee (Change in Storage) Flow is  -1664 cfs or  -3300 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:  12.96     10.32       0      0    0    0    0    0  (cfs)
  S193:       ______
  S191:        19.45     10.22     276    0.0  0.3  0.0
  S135 Pumps:  11.80     10.53       0      0    0    0    0       (cfs)
  S135 Culverts:                     0    0.0  0.0
 
North West Shore
  S65E:        20.69      9.96    1863    0.7  0.6  0.6  0.4  0.7  0.6
  S127 Pumps:  13.20     11.10       0      0    0    0    0    0  (cfs)
  S127 Culvert:                   -NR-   -NR-
 
  S129 Pumps:  11.24     11.76       0      0    0    0            (cfs)
  S129 Culvert:                      0    0.0
 
  S131 Pumps:  12.37     11.78       0      0    0                 (cfs)
  S131 Culvert:
 
  Fisheating Creek
    nr Palmdale         ______    -NR-
    nr Lakeport         ______
  C5:         ______    10.59   -NR-   -NR- -NR- -NR-
 
South Shore
  S4 Pumps:    10.75     10.75       0      0    0    0            (cfs)
  S169:        10.76     10.93       0    0.0  0.0  0.0
  S310:       ______              -NR-
  S3 Pumps:   ______      -NR-       0      0    0    0            (cfs)
  S354:         -NR-    ______    -NR-   -NR- -NR-
  S2 Pumps:    10.55     10.87       0      0    0    0    0       (cfs)
  S351:        10.87     10.55    -NR-   -NR- -NR- -NR-
  S352:        11.05     10.42       0   -NR- -NR-
  C10A:         -NR-     11.61           -NR-  -NR-   8.0  -NR-  -NR-
  L8 Canal PT            11.75    -624
 
  _________________________________________________________________________
                               Temporary Pumps
 
  S351:        10.55     10.87    -NR-  -NR--NR--NR--NR--NR--NR-
  S352:        10.42     11.05       0  -NR--NR--NR--NR-
  S354:       ______      -NR-    -NR-  -NR--NR--NR--NR-
  _________________________________________________________________________
 
Caloosahatchee River (S77, S78, S79)
  S47B:        10.55     11.98            0.0  0.0
  S47D:        11.92     10.88       0    0.0
  S77:
    Spillway and Sector Flow:
               10.45     11.01    -276    0.0  1.5  1.5  0.0
    Flow Due to Lockages+:          -1
 
  S78:
    Spillway and Sector Flow:
               10.79      3.31       0    0.0  0.0  0.0  0.0
    Flow Due to Lockages+:          11
 
  S79:
    Spillway and Sector Flow:
                3.32      1.24     189    0.0  0.0  0.0  0.5  0.5  0.5  0.0  0.0
    Flow Due to Lockages+:           2
    Percent of flow from S77      -146%
    Chloride            (ppm)    135
 
 
St. Lucie Canal (S308, S80)
  S308:
    Spillway and Sector Flow:
               10.55     10.60       0    0.0  0.0  0.0  0.0
    Flow Due to Lockages+:           0
 
  S308 Below USGS Flow Gage         24
  S153:        18.66     10.49      67    0.0  0.0
  S80:
    Spillway and Sector Flow:
               10.77      0.05       0    0.0  0.0  0.0  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:           3
    Percent of flow from S308     -NR-%
 
  Steele Point Top Salinity    (mg/ml)   30
  Steele Point Bottom Salinity (mg/ml)   29
 
  Speedy Point Top Salinity    (mg/ml)   17
  Speedy Point Bottom Salinity (mg/ml)   17
 
 + 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        0.04
  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        1.12
  S77:                         0.05        0.05        0.05      227       4
  S78:                         0.00        0.00        0.00       55       3
  S79:                         0.00        0.00        0.00      300       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:                        0.03        0.03        0.03       63      17
  S80:                         0.00        0.00        0.00        3       2
        Okeechobee Average     0.04        0.01        0.10
        (Sites S78, S79 and S80 not included)
 
______________________________________________________________________________
Okeechobee Lake Elevations  13 APR 2008           10.50 Difference from 13APR08
   13APR08  -1 Day  =       12 APR 2008           10.51             0.01
   13APR08  -2 Days =       11 APR 2008           10.54             0.04
   13APR08  -3 Days =       10 APR 2008           10.53             0.03
   13APR08  -4 Days =       09 APR 2008           10.52             0.02
   13APR08  -5 Days =       08 APR 2008           10.50             0.00
   13APR08  -6 Days =       07 APR 2008           10.48            -0.02
   13APR08  -7 Days =       06 APR 2008           10.35            -0.15
   13APR08 -30 Days =       14 MAR 2008           10.17            -0.33
   13APR08  -1 Year =       13 APR 2007           10.05            -0.45
   13APR08  -2 Year =       13 APR 2006           14.15             3.65
______________________________________________________________________________
Long Term Mean 30day Avearge ET for Lake Alfred (Inches) =  4.10
______________________________________________________________________________
                         Lake Okeechobee Net Inflow (LONIN)
                   Average Flow over the previous 14 days  |  Avg-Daily Flow
   13APR08    Today =       13 APR 2008      -NR-  MON     |      -NR-
   13APR08  -1 Day  =       12 APR 2008      -NR-  SUN     |      -NR-
   13APR08  -2 Days =       11 APR 2008      -NR-  SAT     |      -NR-
   13APR08  -3 Days =       10 APR 2008      -NR-  FRI     |      -NR-
   13APR08  -4 Days =       09 APR 2008      -NR-  THU     |      -NR-
   13APR08  -5 Days =       08 APR 2008      -NR-  WED     |      -NR-
   13APR08  -6 Days =       07 APR 2008      -NR-  TUE     |      -NR-
   13APR08  -7 Days =       06 APR 2008      -NR-  MON     |      -NR-
   13APR08  -8 Days =       05 APR 2008      -NR-  SUN     |      -NR-
   13APR08  -9 Days =       04 APR 2008      -NR-  SAT     |      -NR-
   13APR08 -10 Days =       03 APR 2008      -NR-  FRI     |      -NR-
   13APR08 -11 Days =       02 APR 2008      -NR-  THU     |      -NR-
   13APR08 -12 Days =       01 APR 2008      -NR-  WED     |      -NR-
   13APR08 -13 Days =       31 MAR 2008      -NR-  TUE     |      -NR-
______________________________________________________________________________
______________________________________________________________________________
                                 S65-E
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   13APR08     Today=       13 APR 2008      1873  MON     |      1863
   13APR08  -1 Day  =       12 APR 2008      1874  SUN     |      1786
   13APR08  -2 Days =       11 APR 2008      1875  SAT     |      1814
   13APR08  -3 Days =       10 APR 2008      1882  FRI     |      1637
   13APR08  -4 Days =       09 APR 2008      1890  THU     |      2201
   13APR08  -5 Days =       08 APR 2008      1832  WED     |      3125
   13APR08  -6 Days =       07 APR 2008      1731  TUE     |      1797
   13APR08  -7 Days =       06 APR 2008      1736  MON     |      1640
   13APR08  -8 Days =       05 APR 2008      1730  SUN     |      1732
   13APR08  -9 Days =       04 APR 2008      1688  SAT     |      1788
   13APR08 -10 Days =       03 APR 2008      1615  FRI     |      2310
   13APR08 -11 Days =       02 APR 2008      1515  THU     |      1592
   13APR08 -12 Days =       01 APR 2008      1496  WED     |      1272
   13APR08 -13 Days =       31 MAR 2008      1466  TUE     |      1666
______________________________________________________________________________
Lake Okeechobee Outlets Last 14 Days
 
             S-77       S-77       S-78       S-78    Below S308    S-308
           Discharge  Discharge  Discharge  Discharge  Discharge  Discharge
          (0700-2100) (ALL DAY) (0700-2100) (ALL DAY)  (ALL DAY)  (ALL DAY)
   DATE     (AC-FT)    (AC-FT)    (AC-FT)    (AC-FT)    (AC-FT)    (AC-FT)
13 APR 2008   -319      -549         0         21         48           0
12 APR 2008   -550      -958         0         24         88           0
11 APR 2008   -728     -1224         0          9        260          63
10 APR 2008   -795     -1351         0         22        136           0
09 APR 2008   -345      -566         0         12        -83          -1
08 APR 2008   -139      -232         0       -NR-        -98          -1
07 APR 2008   -127      -199         0       -NR-        -38          -0
06 APR 2008   -101      -171         0         19        240           1
05 APR 2008   -104      -172         0         19        327           1
04 APR 2008    -69      -136         0         19        475         188
03 APR 2008    -65      -127         0         23        388          99
02 APR 2008    -68      -131         0         15       -NR-          99
01 APR 2008    -74      -147         0         11       -NR-          -0
31 MAR 2008    -71      -152         0         25       -NR-          -1
 
             S-79       S-310      S-351      S-352      S-354    L8 Canal Pt
           Discharge  Discharge  Discharge  Discharge  Discharge  Discharge
           (ALL DAY)  (ALL DAY)  (ALL DAY)  (ALL DAY)  (ALL DAY)  (ALL DAY)
   DATE     (AC-FT)    (AC-FT)    (AC-FT)    (AC-FT)    (AC-FT)    (AC-FT)
13 APR 2008    380      -NR-       -NR-         0        -NR-      -1237
12 APR 2008    324      -NR-       -NR-         0        -NR-      -1305
11 APR 2008    322      -NR-       -NR-         0        -NR-      -1341
10 APR 2008    674      -NR-       -NR-         0        -NR-      -1181
09 APR 2008    795      -NR-       -NR-         0        -NR-       -666
08 APR 2008   2361      -NR-       -NR-         0        -NR-       -996
07 APR 2008   1695      -NR-       -NR-         0        -NR-      -1446
06 APR 2008      5      -NR-       -NR-      -NR-        -NR-      -1167
05 APR 2008      7      -NR-       -NR-      -NR-        -NR-      -1185
04 APR 2008    299      -NR-       -NR-      -NR-        -NR-      -1229
03 APR 2008    757      -NR-          0      -NR-        -NR-      -1195
02 APR 2008      4      -NR-          0      -NR-        -NR-      -1190
01 APR 2008      4      -NR-          0      -NR-        -NR-      -1212
31 MAR 2008      6      -NR-          0      -NR-        -NR-      -1200
***  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
______________________________________________________________________________
   * As of 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, we began using the average of the interior 4 station gages
     as the official Lake Okeechobee Elevation.
   * On 16 April 2007,  Lake Okeechobee Elevation was switched to a 8 gage
     mixture of interior and exterior gages due to wind effects on Lake O
   (When the 4 station gages are not working the 10 station elevation is used)
     Today Lake Okechobee elevation is determined from the 4 interior stations
  ++ For more information see the Jacksonville District Navigation website
     at http://www.saj.usace.army.mil/hydroSurvey/hydro.htm
   $ For information regarding Lake Okeechobee Service Area water restrictions
     please refer to www.sfwmd.gov
______________________________________________________________________________
Report Generated 14APR2008 @ 14:15  ** Preliminary Data - Subject to Revision **