lonin
               U. S. Army Corps of Engineers, Jacksonville District
                     Lake Okeechobee Net Inflow Report(LONIN)
                   ** Preliminary Data - Subject to Revision **
 
Data Ending 2400 hours   16 DEC 2018
____________________________________________________________________________________
 
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(*):   -620  cfs
 7 Day Average LONIN(*):   -732 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)  |
16 DEC 2018|    628  | -1966   |  1190   |  -178  |   397 |   545 |   295 |   167  |
15 DEC 2018|   2438  |     0   |  1236   |  -127  |   304 |   511 |   229 |   157  |
14 DEC 2018|    291  | -1916   |   804   |  -133  |   557 |   561 |   172 |   114  |
13 DEC 2018|   3971  |  1916   |   135   |  -157  |   882 |   601 |   292 |   146  |
12 DEC 2018|  -1260  | -3832   |   459   |  -146  |  1017 |   511 |   412 |   174  |
11 DEC 2018|  -6345  | -9579   |  1222   |  -137  |   950 |   521 |   357 |   184  |
10 DEC 2018|  -4844  | -7714   |  1220   |   -30  |   715 |   527 |   220 |   187  |
09 DEC 2018|   -842  | -3933   |  1567   |     9  |   620 |   509 |   220 |   165  |
08 DEC 2018|   1724  | -1966   |  1799   |   -36  |   853 |   505 |   361 |   173  |
07 DEC 2018|   2956  |     0   |   715   |     0  |  1054 |   560 |   422 |   205  |
06 DEC 2018|  -3366  | -5899   |   436   |     0  |   975 |   544 |   389 |   189  |
05 DEC 2018|  -5568  | -8016   |   558   |  -142  |   924 |   456 |   304 |   205  |
04 DEC 2018|    448  | -2118   |   969   |  -158  |   694 |   441 |   257 |   205  |
03 DEC 2018|   1086  | -2118   |  1485   |   -49  |   801 |   459 |   251 |   207  |
____________________________________________________________________________________
 
 
Preferred Discharges
__________________________________________________________
           | S-77    |Below S-77 |    S-77 Preferred*     |
   DATE    | (CFS)   |(CFS)      |        (CFS)           |
16 DEC 2018|   1190  |  1168     |  1190   Structure Flow |
15 DEC 2018|   1236  |  1177     |  1236   Structure Flow |
14 DEC 2018|    804  |   664     |   804   Structure Flow |
13 DEC 2018|    135  |   106     |   135   Structure Flow |
12 DEC 2018|    628  |   459     |   459   Below Flow     |
11 DEC 2018|   1222  |   960     |  1222   Structure Flow |
10 DEC 2018|   1220  |  1126     |  1220   Structure Flow |
09 DEC 2018|   1567  |  1450     |  1567   Structure Flow |
08 DEC 2018|   1799  |  1635     |  1799   Structure Flow |
07 DEC 2018|   1312  |   715     |   715   Below Flow     |
06 DEC 2018|    610  |   436     |   436   Below Flow     |
05 DEC 2018|    558  |   466     |   558   Structure Flow |
04 DEC 2018|    969  |  1003     |   969   Structure Flow |
03 DEC 2018|   1485  |  1361     |  1485   Structure Flow |
___________________________________________________________
 
__________________________________________________________
           | S-308   |Below S-308|    S-308 Preferred*    |
   DATE    | (CFS)   |(CFS)      |        (CFS)           |
16 DEC 2018|   -178  |  -102     |  -178   Structure Flow |
15 DEC 2018|   -127  |  -117     |  -127   Structure Flow |
14 DEC 2018|   -133  |    44     |  -133   Structure Flow |
13 DEC 2018|   -157  |   136     |  -157   Structure Flow |
12 DEC 2018|   -146  |    37     |  -146   Structure Flow |
11 DEC 2018|   -137  |     9     |  -137   Structure Flow |
10 DEC 2018|    -30  |     3     |   -30   Structure Flow |
09 DEC 2018|      9  |   -11     |     9   Structure Flow |
08 DEC 2018|    -36  |   126     |   -36   Structure Flow |
07 DEC 2018|      0  |    86     |     0   Structure Flow |
06 DEC 2018|      0  |    58     |     0   Structure Flow |
05 DEC 2018|   -142  |   -99     |  -142   Structure Flow |
04 DEC 2018|   -158  |   -11     |  -158   Structure Flow |
03 DEC 2018|    -49  |   -45     |   -49   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 17DEC2018 @ 04:15  ** Preliminary Data - Subject to Revision **