U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 17 AUG 2008 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 11.26 9.51 11.98 (Official Elv) Bottom of High Lake Mngmt= 16.36 Top of Water Short Mngmt= 12.09 Currently in Water Shortage Management Band 17AUG (1965-2006) Period of Record Average 14.14 Difference from POR Average -2.88 Simulated Average LORS2008 [1965-2000] 13.01 Difference from Average LORS2008 -1.75 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 5.20' Route 2 ÷ 2.60' Bridge Clearance = 51.79' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): (BAD) L001 L005 L006 LZ40 S4 S352 S308 S133 11.18 11.30 11.13 11.42 11.42 11.53 11.26 11.37 *Combination Okeechobee Avg-Daily Lake Average = 11.33 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 11.18 11.30 11.13 11.42 *Interior Okeechobee Avg-Daily Lake Average = 11.26 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) (BAD) (BAD) (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 5.48 11.42 11.48 11.39 11.53 11.26 11.21 11.37 11.29 11.66 *Edge Okeechobee Avg-Daily Lake Average = 10.81 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 69 S191 0 Fisheating Cr -NR- S154 0 S133 Pumps -NR- S135 Pumps 0 S84 130 S127 Pumps -NR- S2 Pumps 0 S71 708 S129 Pumps 0 S3 Pumps 0 S72 166 S131 Pumps 0 S4 Pumps 0 Total Inflows: 1073 Okeechobee Outflows (cfs): S135 Culverts 0 S354 -NR- S77 -NR- S127 Culverts 0 S351 -NR- S308 (BAD) -233 S129 Culverts 0 S352 -NR- S131 Culverts L8 Canal Pt -NR- C5 -NR- Total Outflows: No Report Due To Missing S77 or S308 Discharge Data Okeechobee Pan Evaporation (inches): S77 -NR- S308 0.28 Average Pan Evap x 0.75 Pan Coefficient = -NR-" = -NR-' Lake Average Precipitation using NEXRAD: = 0.44" = 0.04' Evaporation - Precipitation: = -NR-" = -NR-' Evaporation - Precipitation using Lake Area of 730 square miles is equal to -NR- Lake Okeechobee (Change in Storage) Flow is 1815 cfs or 3600 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: 12.99 11.30 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 18.62 11.17 0 0.0 0.0 0.0 S135 Pumps: 11.84 11.28 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 20.86 10.92 69 0.0 0.0 0.0 0.0 0.0 0.0 S127 Pumps: 13.80 11.31 -NR- 0 0 0 0 -NR- (cfs) S127 Culvert: 0 0.0 S129 Pumps: 12.28 11.74 0 0 0 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 12.97 12.97 0 0 0 (cfs) S131 Culvert: Fisheating Creek nr Palmdale ______ -NR- nr Lakeport ______ C5: ______ 5.48 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 11.60 11.42 0 0 0 0 (cfs) S169: 11.45 11.74 0 0.0 0.0 0.0 S310: ______ -NR- S3 Pumps: ______ -NR- 0 0 0 0 (cfs) S354: -NR- ______ -NR- -NR- -NR- S2 Pumps: 9.88 11.27 0 0 0 0 0 (cfs) S351: 11.27 9.88 -NR- -NR- -NR- -NR- S352: ______ -NR- -NR- -NR- -NR- C10A: -NR- 11.96 -NR- -NR- 8.0 -NR- -NR- L8 Canal PT 12.00 -NR- _________________________________________________________________________ Temporary Pumps S351: 9.88 11.27 -NR- -NR--NR--NR--NR--NR--NR- S352: -NR- ______ -NR- -NR--NR--NR--NR- S354: ______ -NR- -NR- -NR--NR--NR--NR- _________________________________________________________________________ Caloosahatchee River (S77, S78, S79) S47B: 11.27 12.54 0.0 0.0 S47D: 12.51 11.36 0 0.0 S77: Spillway and Sector Flow: -NR- -NR- -NR- -NR- -NR- -NR- -NR- Flow Due to Lockages+: -NR- S77 Below USGS Flow Gage -NR- (TESTING) S78: Spillway and Sector Flow: 11.40 2.84 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 2 S79: Spillway and Sector Flow: 2.97 0.80 786 0.0 0.5 0.5 0.5 0.5 0.5 0.5 0.0 Flow Due to Lockages+: 2 Percent of flow from S77 -NR-% Chloride (ppm) 52 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 11.18 11.71 -233 0.0 2.5 0.0 0.0 Flow Due to Lockages+: 0 S308 Below USGS Flow Gage -NR- S153: 18.87 11.65 0 0.0 0.0 S80: Spillway and Sector Flow: 11.86 1.59 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 5 Percent of flow from S308 -NR-% Steele Point Top Salinity (mg/ml) 32 Steele Point Bottom Salinity (mg/ml) 28 Speedy Point Top Salinity (mg/ml) -N Speedy Point Bottom Salinity (mg/ml) -N + 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 0.31 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: -NR- 0.00 1.23 S135 Pump Station: -NR- 0.00 0.15 S127 Pump Station: -NR- 0.00 0.02 S129 Pump Station: -NR- 0.00 0.10 S131 Pump Station: -NR- 0.00 0.68 S77: -NR- 0.00 0.00 -NR- -NR- S78: 0.11 0.20 1.11 275 2 S79: 0.00 0.00 0.12 24 2 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: -NR- 0.00 0.86 S3 Pump Station: -NR- 0.00 0.36 S2 Pump Station: -NR- 0.00 0.73 S308: 0.00 0.00 0.24 123 1 S80: 0.00 0.01 0.81 13 0 Okeechobee Average 0.00 0.00 0.36 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 17 AUG 2008 11.26 Difference from 17AUG08 17AUG08 -1 Day = 16 AUG 2008 11.25 -0.01 17AUG08 -2 Days = 15 AUG 2008 11.27 0.01 17AUG08 -3 Days = 14 AUG 2008 11.23 -0.03 17AUG08 -4 Days = 13 AUG 2008 11.27 0.01 17AUG08 -5 Days = 12 AUG 2008 11.26 0.00 17AUG08 -6 Days = 11 AUG 2008 11.24 -0.02 17AUG08 -7 Days = 10 AUG 2008 11.17 -0.09 17AUG08 -30 Days = 18 JUL 2008 10.31 -0.95 17AUG08 -1 Year = 17 AUG 2007 9.51 -1.75 17AUG08 -2 Year = 17 AUG 2006 11.98 0.72 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 4.42 ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 17AUG08 Today = 17 AUG 2008 -NR- MON | -NR- 17AUG08 -1 Day = 16 AUG 2008 -NR- SUN | -NR- 17AUG08 -2 Days = 15 AUG 2008 -NR- SAT | -NR- 17AUG08 -3 Days = 14 AUG 2008 -NR- FRI | -NR- 17AUG08 -4 Days = 13 AUG 2008 -NR- THU | -NR- 17AUG08 -5 Days = 12 AUG 2008 -NR- WED | -NR- 17AUG08 -6 Days = 11 AUG 2008 -NR- TUE | -NR- 17AUG08 -7 Days = 10 AUG 2008 -NR- MON | -NR- 17AUG08 -8 Days = 09 AUG 2008 -NR- SUN | -NR- 17AUG08 -9 Days = 08 AUG 2008 -NR- SAT | -NR- 17AUG08 -10 Days = 07 AUG 2008 -NR- FRI | -NR- 17AUG08 -11 Days = 06 AUG 2008 -NR- THU | -NR- 17AUG08 -12 Days = 05 AUG 2008 -NR- WED | -NR- 17AUG08 -13 Days = 04 AUG 2008 -NR- TUE | -NR- ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 17AUG08 Today= 17 AUG 2008 1919 MON | 69 17AUG08 -1 Day = 16 AUG 2008 2091 SUN | 924 17AUG08 -2 Days = 15 AUG 2008 2186 SAT | 2432 17AUG08 -3 Days = 14 AUG 2008 2221 FRI | 1652 17AUG08 -4 Days = 13 AUG 2008 2281 THU | 1939 17AUG08 -5 Days = 12 AUG 2008 2337 WED | 2121 17AUG08 -6 Days = 11 AUG 2008 2382 TUE | 1999 17AUG08 -7 Days = 10 AUG 2008 2432 MON | 3286 17AUG08 -8 Days = 09 AUG 2008 2387 SUN | 2992 17AUG08 -9 Days = 08 AUG 2008 2370 SAT | 1241 17AUG08 -10 Days = 07 AUG 2008 2465 FRI | 1228 17AUG08 -11 Days = 06 AUG 2008 2546 THU | 1632 17AUG08 -12 Days = 05 AUG 2008 2606 WED | 2930 17AUG08 -13 Days = 04 AUG 2008 2556 TUE | 2419 ______________________________________________________________________________ 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) 17 AUG 2008 -NR- -NR- 0 5 -NR- -462 16 AUG 2008 -NR- -NR- 0 7 -NR- -4307 15 AUG 2008 -NR- -NR- 0 2 -218 -1216 14 AUG 2008 -NR- -NR- 0 2 -428 -1672 13 AUG 2008 -NR- -NR- 0 7 -202 0 12 AUG 2008 -NR- -NR- 0 0 -34 0 11 AUG 2008 -NR- -NR- 0 -NR- -311 -873 10 AUG 2008 -NR- -NR- 0 2 -548 -1945 09 AUG 2008 -NR- -NR- 0 -NR- -306 -916 08 AUG 2008 -NR- -NR- 0 -NR- -374 -1979 07 AUG 2008 1876 -NR- 0 5 -128 -660 06 AUG 2008 1829 3482 0 5 -6736 -3222 05 AUG 2008 1760 3395 0 5 -NR- -718 04 AUG 2008 -24773 -NR- 0 0 -NR- -1303 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) 17 AUG 2008 1563 -NR- -NR- -NR- -NR- -NR- 16 AUG 2008 1587 -NR- -NR- -NR- -NR- -1130 15 AUG 2008 1766 -NR- -NR- -NR- -NR- -1096 14 AUG 2008 1605 -NR- -NR- -NR- -NR- -1065 13 AUG 2008 -NR- -NR- -NR- -NR- -NR- -1071 12 AUG 2008 1880 -NR- -NR- -NR- -NR- -1029 11 AUG 2008 1436 -NR- -NR- -NR- -NR- -1108 10 AUG 2008 1920 -NR- -NR- -NR- -NR- -1159 09 AUG 2008 2001 -NR- -NR- -NR- -NR- -1192 08 AUG 2008 1555 -NR- -NR- -NR- -NR- -1118 07 AUG 2008 2225 -NR- -NR- -NR- -NR- -1172 06 AUG 2008 2300 -NR- -NR- -NR- -NR- -668 05 AUG 2008 2492 -NR- -NR- -NR- -NR- -1005 04 AUG 2008 2534 -NR- -NR- -NR- -NR- -1224 *** 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 18AUG2008 @ 15:15 ** Preliminary Data - Subject to Revision **