U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 29 SEP 2008 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 14.93 9.84 13.40 (Official Elv) Bottom of High Lake Mngmt= 16.72 Top of Water Short Mngmt= 12.98 Currently in Operational Management Band 29SEP (1965-2007) Period of Record Average 14.87 Difference from POR Average 0.06 Simulated Average LORS2008 [1965-2000] 13.77 Difference from Average LORS2008 1.16 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 8.87' Route 2 ÷ 6.27' Bridge Clearance = 49.22' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 S4 S352 S308 S133 14.81 14.95 14.93 15.05 15.02 15.15 14.94 14.98 *Combination Okeechobee Avg-Daily Lake Average = 14.98 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 14.81 14.95 14.93 15.05 *Interior Okeechobee Avg-Daily Lake Average = 14.93 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 14.99 15.02 15.09 15.01 15.15 14.94 14.84 14.98 14.90 14.94 *Edge Okeechobee Avg-Daily Lake Average = 14.98 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 454 S191 275 Fisheating Cr 82 S154 28 S133 Pumps -NR- S135 Pumps 0 S84 0 S127 Pumps 0 S2 Pumps 0 S71 152 S129 Pumps 102 S3 Pumps 0 S72 0 S131 Pumps 18 S4 Pumps 0 Total Inflows: 1111 Okeechobee Outflows (cfs): S135 Culverts 0 S354 0 S77 1797 S127 Culverts -NR- S351 0 S308 568 S129 Culverts -NR- S352 0 S131 Culverts L8 Canal Pt 192 C5 -NR- Total Outflows: 2556 Okeechobee Pan Evaporation (inches): S77 0.20 S308 0.25 Average Pan Evap x 0.75 Pan Coefficient = 0.17" = 0.01' 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 -4235 cfs or -8400 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: 13.85 15.10 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 19.61 14.78 275 0.0 0.0 0.0 S135 Pumps: 13.41 14.91 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 20.99 14.97 454 0.0 0.3 0.1 0.3 0.1 0.1 S127 Pumps: 13.79 14.93 0 0 0 0 0 0 (cfs) S127 Culvert: -NR- -NR- S129 Pumps: 13.31 15.04 102 34 34 34 (cfs) S129 Culvert: -NR- -NR- S131 Pumps: 13.23 14.98 18 9 9 (cfs) S131 Culvert: Fisheating Creek nr Palmdale 30.80 82 nr Lakeport ______ C5: ______ 14.99 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 11.38 15.03 0 0 0 0 (cfs) S169: 15.00 11.57 0 0.0 0.0 0.0 S310: ______ -NR- S3 Pumps: ______ -NR- 0 0 0 0 (cfs) S354: -NR- ______ 0 -NR- -NR- S2 Pumps: 11.13 15.01 0 0 0 0 0 (cfs) S351: 15.01 11.13 0 -NR- -NR- -NR- S352: 15.16 9.63 0 0.0 0.0 C10A: -NR- 14.34 -NR- -NR- 7.0 -NR- -NR- L8 Canal PT 14.42 192 _________________________________________________________________________ Temporary Pumps S351: 11.13 15.01 0 -NR--NR--NR--NR--NR--NR- S352: 9.63 15.16 0 -NR--NR--NR--NR- S354: ______ -NR- 0 -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 14.84 10.14 0.0 0.0 S47D: 10.17 10.96 -NR- 0.0 S77: Spillway and Sector Flow: 14.60 11.08 1796 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 1 S77 Below USGS Flow Gage 2048 (TESTING) S78: Spillway and Sector Flow: 11.04 3.29 1867 0.0 1.0 1.0 0.0 Flow Due to Lockages+: 6 S79: Spillway and Sector Flow: 3.34 1.60 3176 0.0 0.0 1.0 1.0 1.0 1.0 0.0 0.0 Flow Due to Lockages+: 1 Percent of flow from S77 57% Chloride (ppm) 53 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 14.98 14.28 567 0.0 2.5 0.0 0.0 Flow Due to Lockages+: 1 S308 Below USGS Flow Gage 666 S153: 18.59 14.21 119 0.1 0.1 S80: Spillway and Sector Flow: 14.39 2.38 637 0.0 0.0 0.0 0.5 0.5 0.0 0.0 Flow Due to Lockages+: 9 Percent of flow from S308 89% Steele Point Top Salinity (mg/ml) 25 Steele Point Bottom Salinity (mg/ml) 24 Speedy Point Top Salinity (mg/ml) 15 Speedy Point Bottom Salinity (mg/ml) 11 + 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: -NR- 0.00 0.65 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: -NR- 0.02 0.59 S135 Pump Station: -NR- 0.17 0.50 S127 Pump Station: -NR- 0.01 0.20 S129 Pump Station: -NR- 0.00 0.29 S131 Pump Station: -NR- 0.00 0.28 S77: 2.66 3.35 4.00 108 1 S78: 1.34 1.39 1.82 60 0 S79: 1.29 1.43 1.51 203 0 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: -NR- 0.25 0.68 S3 Pump Station: -NR- 0.14 0.48 S2 Pump Station: -NR- 0.74 0.85 S308: 0.25 0.65 0.97 134 4 S80: 0.35 1.16 3.24 48 0 Okeechobee Average 1.46 0.41 0.73 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 29 SEP 2008 14.93 Difference from 29SEP08 29SEP08 -1 Day = 28 SEP 2008 14.95 0.02 29SEP08 -2 Days = 27 SEP 2008 14.97 0.04 29SEP08 -3 Days = 26 SEP 2008 14.99 0.06 29SEP08 -4 Days = 25 SEP 2008 15.01 0.08 29SEP08 -5 Days = 24 SEP 2008 15.02 0.09 29SEP08 -6 Days = 23 SEP 2008 15.05 0.12 29SEP08 -7 Days = 22 SEP 2008 15.06 0.13 29SEP08 -30 Days = 30 AUG 2008 14.35 -0.58 29SEP08 -1 Year = 29 SEP 2007 9.84 -5.09 29SEP08 -2 Year = 29 SEP 2006 13.40 -1.53 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 3.91 ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 29SEP08 Today = 29 SEP 2008 1359 TUE | -1680 29SEP08 -1 Day = 28 SEP 2008 1692 MON | 95 29SEP08 -2 Days = 27 SEP 2008 1891 SUN | 419 29SEP08 -3 Days = 26 SEP 2008 2069 SAT | 335 29SEP08 -4 Days = 25 SEP 2008 2302 FRI | 1990 29SEP08 -5 Days = 24 SEP 2008 2432 THU | -701 29SEP08 -6 Days = 23 SEP 2008 3220 WED | 5495 29SEP08 -7 Days = 22 SEP 2008 3127 TUE | 5682 29SEP08 -8 Days = 21 SEP 2008 3188 MON | 3147 29SEP08 -9 Days = 20 SEP 2008 3965 SUN | 2941 29SEP08 -10 Days = 19 SEP 2008 6275 SAT | -3453 29SEP08 -11 Days = 18 SEP 2008 9828 FRI | -NR- 29SEP08 -12 Days = 17 SEP 2008 9828 THU | 2036 29SEP08 -13 Days = 16 SEP 2008 10894 WED | -NR- ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 29SEP08 Today= 29 SEP 2008 1707 TUE | 454 29SEP08 -1 Day = 28 SEP 2008 1925 MON | 568 29SEP08 -2 Days = 27 SEP 2008 2118 SUN | 589 29SEP08 -3 Days = 26 SEP 2008 2410 SAT | 895 29SEP08 -4 Days = 25 SEP 2008 2686 FRI | 1093 29SEP08 -5 Days = 24 SEP 2008 2950 THU | 1533 29SEP08 -6 Days = 23 SEP 2008 3234 WED | 1580 29SEP08 -7 Days = 22 SEP 2008 3602 TUE | 1713 29SEP08 -8 Days = 21 SEP 2008 3968 MON | 2150 29SEP08 -9 Days = 20 SEP 2008 4321 SUN | 2124 29SEP08 -10 Days = 19 SEP 2008 4792 SAT | 1641 29SEP08 -11 Days = 18 SEP 2008 5336 FRI | 2857 29SEP08 -12 Days = 17 SEP 2008 5840 THU | 2999 29SEP08 -13 Days = 16 SEP 2008 6400 WED | 3702 ______________________________________________________________________________ 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) 29 SEP 2008 1520 3564 1594 3714 1320 1126 28 SEP 2008 4266 7406 4039 6971 847 778 27 SEP 2008 4782 8049 4342 7343 995 773 26 SEP 2008 4789 8037 4558 7724 759 715 25 SEP 2008 4704 7855 4552 7689 125 3 24 SEP 2008 4604 7766 2922 -NR- 2344 3360 23 SEP 2008 4738 8082 4966 -NR- 4781 6727 22 SEP 2008 5355 8621 5362 8482 4623 6552 21 SEP 2008 4741 7395 4363 6866 5096 7068 20 SEP 2008 4451 7286 2996 5286 5187 6782 19 SEP 2008 2676 5158 1521 4706 4753 4861 18 SEP 2008 2119 -NR- 2599 3854 3386 3201 17 SEP 2008 1577 2473 1314 2208 1387 1285 16 SEP 2008 558 -NR- 666 980 598 525 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) 29 SEP 2008 6300 -NR- 0 0 0 380 28 SEP 2008 9901 -NR- 0 0 0 409 27 SEP 2008 10385 -NR- 0 0 0 412 26 SEP 2008 9518 -NR- 0 0 0 410 25 SEP 2008 11362 -NR- 0 0 0 397 24 SEP 2008 11058 -NR- 0 0 0 387 23 SEP 2008 11357 -NR- 0 0 0 390 22 SEP 2008 12444 -NR- 0 0 0 399 21 SEP 2008 9404 -NR- 0 0 0 381 20 SEP 2008 7653 -NR- 0 0 0 375 19 SEP 2008 7677 -NR- 0 0 0 333 18 SEP 2008 6963 -NR- 0 0 0 315 17 SEP 2008 4398 -NR- 0 0 0 289 16 SEP 2008 3480 -NR- 0 0 0 232 *** 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 30SEP2008 @ 08:16 ** Preliminary Data - Subject to Revision **