U. S. Army Corps of Engineers, Jacksonville District
                       Lake Okeechobee and Vicinity Report
 
Data Ending 2400 hours   12 APR 2009
_____________________________________________________________________________
 
Okeechobee Lake Regulation      Elevation   Last Year  2YRS Ago
                                (ft-NGVD)   (ft-NGVD)  (ft-NGVD)
  *Okeechobee Lake Elevation       11.81       10.51    10.07 (Official Elv)
  Bottom of High Lake Mngmt= 17.02  Top of Water Short Mngmt= 11.40
  Currently in Operational Management Band
 
  12APR (1965-2007) Period of Record Average    14.05
  Difference from POR Average                  -2.24
 
  Simulated Average LORS2008 [1965-2000]    12.80
  Difference from Average LORS2008         -0.99
 
  Today Lake Okechobee elevation is determined from the 4 interior stations
 
  ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷  5.75'
                                                               Route 2 ÷  3.15'
  Bridge Clearance = 52.00'
______________________________________________________________________________
 
4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values):
 
  L001   L005   L006   LZ40   S4     S352   S308   S133
  11.64  11.85  11.81  11.95  11.85  12.03   11.78 11.73
 
 *Combination Okeechobee  Avg-Daily Lake Average =  11.83
                                                   (*See Note)
 
Interior Okeechobee Lake Average (Avg-Daily values):
 
  L001   L005   L006   LZ40
  11.64  11.85  11.81  11.95
 
 *Interior Okeechobee Avg-Daily Lake Average =    11.81
                                                 (*See Note)
 
Okeechobee Lake Average (Avg-Daily values):
                                                          (BAD)  (BAD)
  C5     S4     S3     S2     S352   S308   S135   S133   S127   S129
  11.70  11.85  11.99  11.89  12.03   11.78 11.67  11.73  11.77  11.63
 
 *Edge Okeechobee Avg-Daily Lake Average =        11.80
                                                 (*See Note)
 
______________________________________________________________________________
 
Okeechobee Inflows (cfs):
  S65E            220      S191              0      Fisheating Cr  -NR-
  S154           -NR-      S133 Pumps     -NR-      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
Total Inflows:    220
 
Okeechobee Outflows (cfs):
  S135 Culverts     0      S354            553      S77            1530
  S127 Culverts     0      S351            746      S308            127
  S129 Culverts     0      S352            187
  S131 Culverts            L8 Canal Pt      71
  C5             -NR-
Total Outflows:  3214
 
Okeechobee Pan Evaporation (inches):
  S77            0.25      S308           0.30
  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  -3529 cfs or  -7000 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:  11.99     11.78    -NR-      0    0    0    0 -NR-  (cfs)
  S193:       ______
  S191:        18.86     11.75       0    0.0  0.0  0.0
  S135 Pumps:  11.41     11.63       0      0    0    0    0       (cfs)
  S135 Culverts:                     0    0.0  0.0
 
North West Shore
  S65E:        20.88     11.69     220    0.1  0.1  0.1  0.1  0.1  0.1
  S127 Pumps:  12.06     11.78       0      0    0    0    0    0  (cfs)
  S127 Culvert:                      0    0.0
 
  S129 Pumps:  11.76     11.59       0      0    0    0            (cfs)
  S129 Culvert:                      0    0.0
 
  S131 Pumps:  11.95     12.16       0      0    0                 (cfs)
  S131 Culvert:
 
  Fisheating Creek
    nr Palmdale         ______    -NR-
    nr Lakeport         ______
  C5:         ______    11.70   -NR-   -NR- -NR- -NR-
 
South Shore
  S4 Pumps:    10.93     11.82       0      0    0    0            (cfs)
  S169:        11.86     11.15     127    2.0  2.0  1.5
  S310:       ______              -NR-
  S3 Pumps:    11.42     11.85       0      0    0    0            (cfs)
  S354:        11.85     11.42     553    2.2  2.2
  S2 Pumps:    11.37     11.75       0      0    0    0    0       (cfs)
  S351:        11.75     11.37     746    2.9  2.9  2.8
  S352:        11.94     11.30     187    0.6  0.9
  C10A:         -NR-     11.63           -NR-  -NR-   7.0  -NR-  -NR-
  L8 Canal PT            11.68      71
 
  _________________________________________________________________________
                               Temporary Pumps
 
  S351:        11.37     11.75     746  -NR--NR--NR--NR--NR--NR-
  S352:        11.30     11.94     187  -NR--NR--NR--NR-
  S354:        11.42     11.85     553  -NR--NR--NR--NR-
  _________________________________________________________________________
 
Caloosahatchee River (S77, S78, S79)
  S47B:        11.07     10.63            1.5  1.5
  S47D:        10.63     10.57       0    0.0
  S77:
    Spillway and Sector Flow:
               11.63     10.76    1528    4.0  4.0  4.0  4.0
    Flow Due to Lockages+:           2
 
  S77 Below USGS Flow Gage        -NR- (TESTING)
 
  S78:
    Spillway and Sector Flow:
               10.69      3.19    1247    1.0  1.5  1.5  1.0
    Flow Due to Lockages+:          11
 
  S79:
    Spillway and Sector Flow:
                3.03      0.79    1701    1.0  1.0  1.0  1.0  1.0  1.0  1.0  1.0
    Flow Due to Lockages+:          13
    Percent of flow from S77        90%
    Chloride            (ppm)    157
 
 
St. Lucie Canal (S308, S80)
  S308:
    Spillway and Sector Flow:
               11.65     11.50     127    0.0  2.5  0.0  0.0
    Flow Due to Lockages+:           0
 
  S308 Below USGS Flow Gage        182
  S153:        18.71     11.44       0    0.0  0.0
  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)   33
  Steele Point Bottom Salinity (mg/ml)   29
 
  Speedy Point Top Salinity    (mg/ml)   23
  Speedy Point Bottom Salinity (mg/ml)   25
 
 + 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        0.00
  S193:                        -NR-        0.00        0.00     -NR-    -NR-
  Okeechobee Field Station:    0.00        0.00        0.00
  S135 Pump Station:           0.00        0.00        0.00
  S127 Pump Station:           0.00        0.07        0.07
  S129 Pump Station:           0.00        0.02        0.02
  S131 Pump Station:           0.00        0.01        0.01
  S77:                         0.00        0.00        0.00      360       0
  S78:                         0.00        0.00        0.02       14       9
  S79:                         0.00        0.00        0.00       95       2
  S4 Pump Station:             -NR-        0.00        0.00
  Clewiston Field Station:     0.00        0.00        0.00
  S3 Pump Station:             0.00        0.01        0.01
  S2 Pump Station:             0.00        0.04        0.04
  S308:                        0.00        0.00        0.00       41       4
  S80:                         0.00        0.00        0.00     -NR-    -NR-
        Okeechobee Average     0.00        0.01        0.01
        (Sites S78, S79 and S80 not included)
 
______________________________________________________________________________
Okeechobee Lake Elevations  12 APR 2009           11.81 Difference from 12APR09
   12APR09  -1 Day  =       11 APR 2009           11.83             0.02
   12APR09  -2 Days =       10 APR 2009           11.87             0.06
   12APR09  -3 Days =       09 APR 2009           11.90             0.09
   12APR09  -4 Days =       08 APR 2009           11.92             0.11
   12APR09  -5 Days =       07 APR 2009           11.93             0.12
   12APR09  -6 Days =       06 APR 2009           12.04             0.23
   12APR09  -7 Days =       05 APR 2009           12.09             0.28
   12APR09 -30 Days =       13 MAR 2009           12.45             0.64
   12APR09  -1 Year =       12 APR 2008           10.51            -1.30
   12APR09  -2 Year =       12 APR 2007           10.07            -1.74
______________________________________________________________________________
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
   12APR09    Today =       12 APR 2009     -1021  MON     |      -317
   12APR09  -1 Day  =       11 APR 2009     -1197  SUN     |     -3953
   12APR09  -2 Days =       10 APR 2009      -278  SAT     |     -2067
   12APR09  -3 Days =       09 APR 2009       616  FRI     |      -NR-
   12APR09  -4 Days =       08 APR 2009       616  THU     |      1630
   12APR09  -5 Days =       07 APR 2009      -NR-  WED     |      -NR-
   12APR09  -6 Days =       06 APR 2009      -NR-  TUE     |      -NR-
   12APR09  -7 Days =       05 APR 2009      -NR-  MON     |      -NR-
   12APR09  -8 Days =       04 APR 2009      -NR-  SUN     |      -NR-
   12APR09  -9 Days =       03 APR 2009      -NR-  SAT     |      -NR-
   12APR09 -10 Days =       02 APR 2009      -NR-  FRI     |      -398
   12APR09 -11 Days =       01 APR 2009      -NR-  THU     |      -NR-
   12APR09 -12 Days =       31 MAR 2009      -NR-  WED     |      -NR-
   12APR09 -13 Days =       30 MAR 2009      -NR-  TUE     |      -NR-
______________________________________________________________________________
______________________________________________________________________________
                                 S65E
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   12APR09     Today=       12 APR 2009       264  MON     |       220
   12APR09  -1 Day  =       11 APR 2009       300  SUN     |       226
   12APR09  -2 Days =       10 APR 2009       294  SAT     |        32
   12APR09  -3 Days =       09 APR 2009       295  FRI     |       198
   12APR09  -4 Days =       08 APR 2009       291  THU     |       233
   12APR09  -5 Days =       07 APR 2009       288  WED     |       101
   12APR09  -6 Days =       06 APR 2009       286  TUE     |       268
   12APR09  -7 Days =       05 APR 2009       282  MON     |       168
   12APR09  -8 Days =       04 APR 2009       280  SUN     |       191
   12APR09  -9 Days =       03 APR 2009       276  SAT     |       210
   12APR09 -10 Days =       02 APR 2009       271  FRI     |       133
   12APR09 -11 Days =       01 APR 2009       277  THU     |       712
   12APR09 -12 Days =       31 MAR 2009       238  WED     |       204
   12APR09 -13 Days =       30 MAR 2009       232  TUE     |       797
______________________________________________________________________________
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)
12 APR 2009   1994      3033      1800       2494        361         252
11 APR 2009    902      1420       636        861        590         374
10 APR 2009    668      1114        74       -NR-        729         371
09 APR 2009    714      1216       143        295        556        -NR-
08 APR 2009    852      1422        71        138        504         407
07 APR 2009    444       763         0         30     921832        -NR-
06 APR 2009     26        94         0         36       -NR-         371
05 APR 2009     29       156         0         51       -NR-         226
04 APR 2009    776      1260         6        239       -NR-         111
03 APR 2009    588      1224       324        649        303        -NR-
02 APR 2009    676      1367       324        656        393         190
01 APR 2009    740      1632       338        867        334        -NR-
31 MAR 2009   1202      2313       686       1954        225        -NR-
30 MAR 2009   1194      2246       893       1708         83        -NR-
 
             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)
12 APR 2009   3399      -NR-       1479       371        1097        141
11 APR 2009   1129      -NR-       1745       726        1697        201
10 APR 2009     20      -NR-       1916      1204        1793          8
09 APR 2009     21      -NR-       1973      1235        1592        -12
08 APR 2009     11      -NR-       2017      1063        1826         99
07 APR 2009     11      -NR-       2031      1103        2508     -34003
06 APR 2009     12      -NR-       1479       853        1604       -NR-
05 APR 2009     29      -NR-        488       182         795       -NR-
04 APR 2009    361      -NR-        706       254         954       -NR-
03 APR 2009    715      -NR-        970       851        1348         94
02 APR 2009    738      -NR-          0       478         964         16
01 APR 2009    810      -NR-          0        38         410          6
31 MAR 2009    974      -NR-        847       520         752         34
30 MAR 2009   2207      -NR-       1658       992        1225         17
***  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 13APR2009 @ 17:15  ** Preliminary Data - Subject to Revision **