lonin
               U. S. Army Corps of Engineers, Jacksonville District
                     Lake Okeechobee Net Inflow Report(LONIN)
                   ** Preliminary Data - Subject to Revision **
 
Data Ending 2400 hours   18 APR 2019
____________________________________________________________________________________
 
LONIN(*) = Change in Storage + Outflows
LONIN(*) = Change in Storage + S-77 + S-308 + S-351 + S-352 + S-354 + L8@Canal Point
 
14 Day Average LONIN(*):  -1607  cfs
 7 Day Average LONIN(*):  -1603 cfs
 
NOTE: Preferred discharges out of S-77 and S-308 are used in the LONIN calculation
 * Negative outflows are omitted from the LONIN calculation
____________________________________________________________________________________
           | LONIN   | STORAGE | S-77*   | S-308* | S-351*| S-352*| S-354*| L-8@CP*|
   DATE    | (CFS)   | (CFS)   | (CFS)   | (CFS)  | (CFS) | (CFS) | (CFS) | (CFS)  |
18 APR 2019|    873  |     0   |   299   |   -88  |     0 |   323 |   236 |    14  |
17 APR 2019|  -1662  | -3630   |   479   |  -156  |   340 |   525 |   595 |    28  |
16 APR 2019|  -2944  | -5445   |   978   |   -21  |   393 |   512 |   597 |    22  |
15 APR 2019|  -3114  | -5344   |   666   |    -8  |   385 |   556 |   623 |    -6  |
14 APR 2019|  -2151  | -5294   |   679   |    96  |   880 |   724 |   764 |    -2  |
13 APR 2019|  -1976  | -5294   |   554   |  -161  |  1197 |   766 |   801 |    -3  |
12 APR 2019|   -249  | -3529   |   426   |   -93  |  1256 |   747 |   851 |   -16  |
11 APR 2019|   -595  | -3630   |   556   |  -116  |   973 |   638 |   868 |   -54  |
10 APR 2019|  -7043  | -9075   |   614   |   -37  |   396 |   367 |   655 |   -26  |
09 APR 2019|   -503  | -1815   |   838   |    53  |    54 |   221 |   147 |   -81  |
08 APR 2019|   -NR-  | -1815   |  1060   |  -NR-  |   181 |   550 |   356 |   -98  |
07 APR 2019|   -NR-  | -1815   |  1019   |  -NR-  |   250 |   583 |   487 |   -93  |
06 APR 2019|    161  | -1765   |   840   |  -175  |    75 |   571 |   439 |   -82  |
05 APR 2019|    -83  | -1765   |   846   |   -89  |     0 |   486 |   350 |  -NR-  |
____________________________________________________________________________________
 
 
Preferred Discharges
__________________________________________________________
           | S-77    |Below S-77 |    S-77 Preferred*     |
   DATE    | (CFS)   |(CFS)      |        (CFS)           |
18 APR 2019|    299  |   395     |   299   Structure Flow |
17 APR 2019|    479  |   518     |   479   Structure Flow |
16 APR 2019|    978  |  1094     |   978   Structure Flow |
15 APR 2019|    666  |   862     |   666   Structure Flow |
14 APR 2019|    679  |   921     |   679   Structure Flow |
13 APR 2019|    554  |   887     |   554   Structure Flow |
12 APR 2019|    426  |   684     |   426   Structure Flow |
11 APR 2019|    556  |   810     |   556   Structure Flow |
10 APR 2019|    614  |   667     |   614   Structure Flow |
09 APR 2019|    838  |   741     |   838   Structure Flow |
08 APR 2019|   1060  |   964     |  1060   Structure Flow |
07 APR 2019|   1019  |   924     |  1019   Structure Flow |
06 APR 2019|    840  |   689     |   840   Structure Flow |
05 APR 2019|    846  |   713     |   846   Structure Flow |
___________________________________________________________
 
__________________________________________________________
           | S-308   |Below S-308|    S-308 Preferred*    |
   DATE    | (CFS)   |(CFS)      |        (CFS)           |
18 APR 2019|    -88  |   137     |   -88   Structure Flow |
17 APR 2019|   -156  |    69     |  -156   Structure Flow |
16 APR 2019|   -483  |   -21     |   -21   Below Flow     |
15 APR 2019|     -8  |   -23     |    -8   Structure Flow |
14 APR 2019|     96  |    63     |    96   Structure Flow |
13 APR 2019|   -161  |   102     |  -161   Structure Flow |
12 APR 2019|    -93  |   115     |   -93   Structure Flow |
11 APR 2019|   -116  |    -2     |  -116   Structure Flow |
10 APR 2019|    -37  |  -156     |   -37   Structure Flow |
09 APR 2019|     53  |   -68     |    53   Structure Flow |
08 APR 2019|   -NR-  |  -NR-     |  -NR-   Below Flow     |
07 APR 2019|   -NR-  |  -NR-     |  -NR-   Below Flow     |
06 APR 2019|   -175  |  -194     |  -175   Structure Flow |
05 APR 2019|    -89  |    62     |   -89   Structure Flow |
___________________________________________________________
 
Preferred flows out of S-77 and S-308 are determined by using the following criteria:
  - At low flows (<300 cfs), the strcuture flow is used.
  - If all gates are closed, the flow is zero.
  - If the structure flow is greater then the below gage by more than 30%, then the
     downstream gage will be the preferred flow. This scenatio is likely due to
     vegetation clogging which causes the structure flow to be falsely high.
  - If there is positive head accross the structure, negative flows will not be used
  - USACE can force the preferred flows to be one gage or the other, overwriting the above rules
     (exception is if the gates are closed, then flow will be zero)
 
POC for questions about this report: Savannah Lacy, 904-627-0501, Savannah.H.Lacy@usace.army.mil
 
Report Generated 19APR2019 @ 18:15  ** Preliminary Data - Subject to Revision **