U. S. Army Corps of Engineers, Jacksonville District
                       Lake Okeechobee and Vicinity Report
 
Data Ending 2400 hours   19 APR 2009
_____________________________________________________________________________
 
Okeechobee Lake Regulation      Elevation   Last Year  2YRS Ago
                                (ft-NGVD)   (ft-NGVD)  (ft-NGVD)
  *Okeechobee Lake Elevation       11.56       10.44     9.96 (Official Elv)
  Bottom of High Lake Mngmt= 16.88  Top of Water Short Mngmt= 11.23
  Currently in Operational Management Band
 
  19APR (1965-2007) Period of Record Average    13.89
  Difference from POR Average                  -2.33
 
  Simulated Average LORS2008 [1965-2000]    12.66
  Difference from Average LORS2008         -1.10
 
  Today Lake Okechobee elevation is determined from the 4 interior stations
 
  ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷  5.50'
                                                               Route 2 ÷  2.90'
  Bridge Clearance = 52.08'
______________________________________________________________________________
 
4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values):
 
  L001   L005   L006   LZ40   S4     S352   S308   S133
  11.48  11.61  11.49  11.65  11.60  11.70   11.51 11.62
 
 *Combination Okeechobee  Avg-Daily Lake Average =  11.58
                                                   (*See Note)
 
Interior Okeechobee Lake Average (Avg-Daily values):
 
  L001   L005   L006   LZ40
  11.48  11.61  11.49  11.65
 
 *Interior Okeechobee Avg-Daily Lake Average =    11.56
                                                 (*See Note)
 
Okeechobee Lake Average (Avg-Daily values):
                                                          (BAD)  (BAD)
  C5     S4     S3     S2     S352   S308   S135   S133   S127   S129
  11.69  11.60  11.61  11.51  11.70   11.51 11.46  11.62  11.49  11.09
 
 *Edge Okeechobee Avg-Daily Lake Average =        11.53
                                                 (*See Note)
 
______________________________________________________________________________
 
Okeechobee Inflows (cfs):
  S65E             64      S191              0      Fisheating Cr  -NR-
  S154           -NR-      S133 Pumps        0      S135 Pumps        0
  S84               0      S127 Pumps        0      S2 Pumps          0
  S71             209      S129 Pumps     -NR-      S3 Pumps          0
  S72               0      S131 Pumps        0      S4 Pumps          0
Total Inflows:    273
 
Okeechobee Outflows (cfs):
  S135 Culverts     0      S354            247      S77             325
  S127 Culverts     0      S351            609      S308            243
  S129 Culverts     0      S352            149
  S131 Culverts            L8 Canal Pt     -19
  C5             -NR-
Total Outflows:  1554
 
Okeechobee Pan Evaporation (inches):
  S77            0.28      S308           0.31
  Average Pan Evap x 0.75 Pan Coefficient =  0.22" =  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  -5445 cfs or -10800 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:  12.27     11.86       0      0    0    0    0    0  (cfs)
  S193:       ______
  S191:        17.87     11.79       0    0.0  0.0  0.0
  S135 Pumps:  11.07     11.56       0      0    0    0    0       (cfs)
  S135 Culverts:                     0    0.0  0.0
 
North West Shore
  S65E:        20.66     11.77      64    0.0  0.0  0.1  0.0  0.0  0.0
  S127 Pumps:  11.89     11.49       0      0    0    0    0    0  (cfs)
  S127 Culvert:                      0    0.0
 
  S129 Pumps:  11.65     11.05    -NR-      0 -NR-    0            (cfs)
  S129 Culvert:                      0    0.0
 
  S131 Pumps:  11.82     11.88       0      0    0                 (cfs)
  S131 Culvert:
 
  Fisheating Creek
    nr Palmdale         ______    -NR-
    nr Lakeport         ______
  C5:         ______    11.69   -NR-   -NR- -NR- -NR-
 
South Shore
  S4 Pumps:    11.02     11.43       0      0    0    0            (cfs)
  S169:        11.46     11.25     111    2.0  2.0  1.5
  S310:       ______              -NR-
  S3 Pumps:    11.09     11.48       0      0    0    0            (cfs)
  S354:        11.48     11.09     247    1.5  1.5
  S2 Pumps:    11.07     11.42       0      0    0    0    0       (cfs)
  S351:        11.42     11.07     609    2.9  2.4  2.8
  S352:        11.71     11.19     149    0.6  0.9
  C10A:         -NR-     11.41           -NR-  -NR-   7.0  -NR-  -NR-
  L8 Canal PT            11.43     -19
 
  _________________________________________________________________________
                               Temporary Pumps
 
  S351:        11.07     11.42     609  -NR--NR--NR--NR--NR--NR-
  S352:        11.19     11.71     149  -NR--NR--NR--NR-
  S354:        11.09     11.48     247  -NR--NR--NR--NR-
  _________________________________________________________________________
 
Caloosahatchee River (S77, S78, S79)
  S47B:        11.29     11.06            0.0  0.0
  S47D:        11.06     11.06     -39    2.0
  S77:
    Spillway and Sector Flow:
               11.45     11.22     324    1.0  1.0  1.5  1.0
    Flow Due to Lockages+:           1
 
  S77 Below USGS Flow Gage         472 (TESTING)
 
  S78:
    Spillway and Sector Flow:
               11.16      3.04       0    0.0  0.0  0.0  0.0
    Flow Due to Lockages+:          20
 
  S79:
    Spillway and Sector Flow:
                2.90      1.59       0    0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:          17
    Percent of flow from S77      -NR-%
    Chloride            (ppm)    119
 
 
St. Lucie Canal (S308, S80)
  S308:
    Spillway and Sector Flow:
               11.46     11.42     243    0.0  0.0  0.0  0.0
    Flow Due to Lockages+:           0
 
  S308 Below USGS Flow Gage        170
  S153:        18.58     11.30       0    0.0  0.0
  S80:
    Spillway and Sector Flow:
               11.39      0.21       0    0.0  0.0  0.0  0.0  0.0  0.0  0.0
    Flow Due to Lockages+:          26
    Percent of flow from S308     -NR-%
 
  Steele Point Top Salinity    (mg/ml)   20
  Steele Point Bottom Salinity (mg/ml)   24
 
  Speedy Point Top Salinity    (mg/ml)   22
  Speedy Point Bottom Salinity (mg/ml)   28
 
 + 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        0.33
  S193:                        -NR-        0.00        0.00     -NR-    -NR-
  Okeechobee Field Station:    0.00        0.00        0.36
  S135 Pump Station:           0.00        0.00        0.04
  S127 Pump Station:           0.00        0.00        0.08
  S129 Pump Station:           0.00        0.00        0.11
  S131 Pump Station:           0.00        0.00        0.11
  S77:                         0.00        0.00        0.00      360       4
  S78:                         0.00        0.00        1.26       31       3
  S79:                         0.00        0.00        0.27      201       0
  S4 Pump Station:             -NR-        0.00        0.00
  Clewiston Field Station:     0.00        0.00        0.02
  S3 Pump Station:             0.00        0.00        1.29
  S2 Pump Station:             0.00        0.00        0.43
  S308:                        0.00        0.00        1.70      104       9
  S80:                         0.00        0.00        0.50       39       0
        Okeechobee Average     0.00        0.00        0.34
        (Sites S78, S79 and S80 not included)
 
______________________________________________________________________________
Okeechobee Lake Elevations  19 APR 2009           11.56 Difference from 19APR09
   19APR09  -1 Day  =       18 APR 2009           11.59             0.03
   19APR09  -2 Days =       17 APR 2009           11.62             0.06
   19APR09  -3 Days =       16 APR 2009           11.66             0.10
   19APR09  -4 Days =       15 APR 2009           11.69             0.13
   19APR09  -5 Days =       14 APR 2009           11.69             0.13
   19APR09  -6 Days =       13 APR 2009           11.80             0.24
   19APR09  -7 Days =       12 APR 2009           11.81             0.25
   19APR09 -30 Days =       20 MAR 2009           12.37             0.81
   19APR09  -1 Year =       19 APR 2008           10.44            -1.12
   19APR09  -2 Year =       19 APR 2007            9.96            -1.60
______________________________________________________________________________
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
   19APR09    Today =       19 APR 2009     -1731  MON     |     -3873
   19APR09  -1 Day  =       18 APR 2009     -1464  SUN     |     -3227
   19APR09  -2 Days =       17 APR 2009     -1212  SAT     |     -3945
   19APR09  -3 Days =       16 APR 2009      -756  FRI     |     -1976
   19APR09  -4 Days =       15 APR 2009      -493  THU     |      -NR-
   19APR09  -5 Days =       14 APR 2009      -493  WED     |      -NR-
   19APR09  -6 Days =       13 APR 2009      -493  TUE     |      2145
   19APR09  -7 Days =       12 APR 2009     -1021  MON     |      -317
   19APR09  -8 Days =       11 APR 2009     -1197  SUN     |     -3953
   19APR09  -9 Days =       10 APR 2009      -278  SAT     |     -2067
   19APR09 -10 Days =       09 APR 2009       616  FRI     |      -NR-
   19APR09 -11 Days =       08 APR 2009       616  THU     |      1630
   19APR09 -12 Days =       07 APR 2009      -NR-  WED     |      -NR-
   19APR09 -13 Days =       06 APR 2009      -NR-  TUE     |      -NR-
______________________________________________________________________________
______________________________________________________________________________
                                 S65E
                       Average Flow over previous 14 days  |  Avg-Daily Flow
   19APR09     Today=       19 APR 2009       175  MON     |        64
   19APR09  -1 Day  =       18 APR 2009       182  SUN     |       230
   19APR09  -2 Days =       17 APR 2009       179  SAT     |       251
   19APR09  -3 Days =       16 APR 2009       176  FRI     |       234
   19APR09  -4 Days =       15 APR 2009       169  THU     |        66
   19APR09  -5 Days =       14 APR 2009       215  WED     |       206
   19APR09  -6 Days =       13 APR 2009       215  TUE     |       122
   19APR09  -7 Days =       12 APR 2009       263  MON     |       226
   19APR09  -8 Days =       11 APR 2009       299  SUN     |       232
   19APR09  -9 Days =       10 APR 2009       292  SAT     |        34
   19APR09 -10 Days =       09 APR 2009       294  FRI     |       188
   19APR09 -11 Days =       08 APR 2009       290  THU     |       228
   19APR09 -12 Days =       07 APR 2009       287  WED     |        95
   19APR09 -13 Days =       06 APR 2009       286  TUE     |       268
______________________________________________________________________________
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)
19 APR 2009    372       644         0         40        337         482
18 APR 2009    551       931         0         45        266         393
17 APR 2009    778      1593        10        312        492         659
16 APR 2009   1327      2042       549        873        551          60
15 APR 2009    972      1525       376        829        -75        -NR-
14 APR 2009   1556      2492       733       1741       1409        -NR-
13 APR 2009   2116      3579      1822       3102       1172         640
12 APR 2009   1994      3033      1800       2494        361         252
11 APR 2009    902      1420       636        861        590         374
10 APR 2009    588      1114        74       -NR-        729         371
09 APR 2009    618      1216       122        295        556        -NR-
08 APR 2009    747      1422        71        138        504         407
07 APR 2009    396       763         0         30     921832        -NR-
06 APR 2009     26        94         0         36       -NR-         371
 
             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)
19 APR 2009     33      -NR-       1208       295         490        -37
18 APR 2009     36      -NR-       1485       496         896        -55
17 APR 2009    311      -NR-       1840       660        1424        -62
16 APR 2009   1106      -NR-       1995       894        1592       -116
15 APR 2009   1179      -NR-       1459      1051         789        -51
14 APR 2009   1976      -NR-       1503      1329        1388        165
13 APR 2009   3573      -NR-       1650       912         976         -9
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-
***  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 20APR2009 @ 14:15  ** Preliminary Data - Subject to Revision **