lonin
               U. S. Army Corps of Engineers, Jacksonville District
                     Lake Okeechobee Net Inflow Report(LONIN)
                   ** Preliminary Data - Subject to Revision **
 
Data Ending 2400 hours   11 MAY 2021
____________________________________________________________________________________
 
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(*):  -1196  cfs
LORS Classification of LONIN: Dry
 7 Day Average LONIN(*):  -3007 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)  |
11 MAY 2021|  -1782  | -6353   |  1830   |   194  |  1188 |   434 |   924 |    -5  |
10 MAY 2021|  -1564  | -6353   |  2318   |   206  |   922 |   439 |   858 |    46  |
09 MAY 2021|  -6175  |-10588   |  2534   |     0  |   755 |   368 |   717 |    38  |
08 MAY 2021|  -6520  |-10588   |  2198   |     0  |   884 |   338 |   625 |    21  |
07 MAY 2021|  -2872  | -6353   |  1952   |   143  |   491 |   332 |   515 |    48  |
06 MAY 2021|   1378  | -2118   |  1980   |   186  |   548 |   314 |   376 |    91  |
05 MAY 2021|  -3513  | -8470   |  2064   |   222  |  1192 |   794 |   576 |   109  |
04 MAY 2021|  -1019  | -6353   |  1881   |   272  |  1167 |   797 |  1123 |    94  |
03 MAY 2021|    615  | -4235   |  1660   |    57  |  1115 |   687 |  1238 |    93  |
02 MAY 2021|    442  | -4235   |  1700   |     0  |  1116 |   645 |  1113 |   103  |
01 MAY 2021|  -3588  | -8470   |  1781   |    93  |  1178 |   637 |  1110 |    84  |
30 APR 2021|   9983  |  4235   |  2325   |   223  |  1331 |   552 |  1102 |   214  |
29 APR 2021|   1446  | -4235   |  2488   |   161  |  1340 |   535 |  1042 |   115  |
28 APR 2021|  -3577  | -8470   |  1840   |   228  |  1275 |   489 |   986 |    75  |
____________________________________________________________________________________
 
 
Preferred Discharges
__________________________________________________________
           | S-77    |Below S-77 |    S-77 Preferred*     |
   DATE    | (CFS)   |(CFS)      |        (CFS)           |
11 MAY 2021|   1830  |  2169     |  1830   Structure Flow |
10 MAY 2021|   2318  |  2531     |  2318   Structure Flow |
09 MAY 2021|   2534  |  2530     |  2534   Structure Flow |
08 MAY 2021|   2198  |  2114     |  2198   Structure Flow |
07 MAY 2021|   1952  |  2053     |  1952   Structure Flow |
06 MAY 2021|   1980  |  2112     |  1980   Structure Flow |
05 MAY 2021|   2064  |  2122     |  2064   Structure Flow |
04 MAY 2021|   1881  |  1930     |  1881   Structure Flow |
03 MAY 2021|   1660  |  1766     |  1660   Structure Flow |
02 MAY 2021|   1700  |  1955     |  1700   Structure Flow |
01 MAY 2021|   1781  |  2016     |  1781   Structure Flow |
30 APR 2021|   2325  |  2469     |  2325   Structure Flow |
29 APR 2021|   2488  |  2498     |  2488   Structure Flow |
28 APR 2021|   1840  |  1885     |  1840   Structure Flow |
___________________________________________________________
 
__________________________________________________________
           | S-308   |Below S-308|    S-308 Preferred*    |
   DATE    | (CFS)   |(CFS)      |        (CFS)           |
11 MAY 2021|    194  |   154     |   194   Structure Flow |
10 MAY 2021|    206  |   185     |   206   Structure Flow |
09 MAY 2021|      0  |   146     |     0   Structure Flow |
08 MAY 2021|      0  |    36     |     0   Structure Flow |
07 MAY 2021|    143  |    49     |   143   Structure Flow |
06 MAY 2021|    186  |   119     |   186   Structure Flow |
05 MAY 2021|    222  |  -NR-     |   222   Structure Flow |
04 MAY 2021|    272  |   225     |   272   Structure Flow |
03 MAY 2021|     57  |   -13     |    57   Structure Flow |
02 MAY 2021|      0  |   -31     |     0   Structure Flow |
01 MAY 2021|     93  |    14     |    93   Structure Flow |
30 APR 2021|    388  |   223     |   223   Below Flow     |
29 APR 2021|    161  |    85     |   161   Structure Flow |
28 APR 2021|    228  |   328     |   228   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 12MAY2021 @ 06:15  ** Preliminary Data - Subject to Revision **