U. S. Army Corps of Engineers, Jacksonville District Lake Okeechobee and Vicinity Report Data Ending 2400 hours 20 JUL 2008 _____________________________________________________________________________ Okeechobee Lake Regulation Elevation Last Year 2YRS Ago (ft-NGVD) (ft-NGVD) (ft-NGVD) *Okeechobee Lake Elevation 10.34 9.08 12.22 (Official Elv) Bottom of High Lake Mngmt= 16.23 Top of Water Short Mngmt= 11.51 Currently in Water Shortage Management Band 20JUL (1965-2006) Period of Record Average 13.76 Difference from POR Average -3.42 Simulated Average LORS2008 [1965-2000] 12.55 Difference from Average LORS2008 -2.21 Today Lake Okechobee elevation is determined from the 4 interior stations ++Navigation Depths (Based on 2001 Channel Condition Survey) Route 1 ÷ 4.28' Route 2 ÷ 1.68' Bridge Clearance = 51.17' ______________________________________________________________________________ 4 Interior and 4 Edge Okeechobee Lake Average (Avg-Daily values): (BAD) L001 L005 L006 LZ40 S4 S352 S308 S133 10.32 10.40 10.15 10.48 10.56 10.57 10.34 10.55 *Combination Okeechobee Avg-Daily Lake Average = 10.42 (*See Note) Interior Okeechobee Lake Average (Avg-Daily values): L001 L005 L006 LZ40 10.32 10.40 10.15 10.48 *Interior Okeechobee Avg-Daily Lake Average = 10.34 (*See Note) Okeechobee Lake Average (Avg-Daily values): (BAD) (BAD) (BAD) (BAD) (BAD) C5 S4 S3 S2 S352 S308 S135 S133 S127 S129 10.85 10.56 10.48 10.39 10.57 10.34 10.41 10.55 11.25 12.06 *Edge Okeechobee Avg-Daily Lake Average = 10.75 (*See Note) ______________________________________________________________________________ Okeechobee Inflows (cfs): S65E 1890 S191 0 Fisheating Cr -NR- S154 66 S133 Pumps -NR- S135 Pumps 0 S84 34 S127 Pumps 0 S2 Pumps 0 S71 2114 S129 Pumps 0 S3 Pumps 0 S72 318 S131 Pumps 0 S4 Pumps 0 Total Inflows: 4422 Okeechobee Outflows (cfs): S135 Culverts 0 S354 -NR- S77 -NR- S127 Culverts -NR- S351 -NR- S308 (BAD) -933 S129 Culverts 0 S352 -NR- S131 Culverts L8 Canal Pt -662 C5 -NR- Total Outflows: No Report Due To Missing S77 or S308 Discharge Data Okeechobee Pan Evaporation (inches): S77 0.28 S308 0.36 Average Pan Evap x 0.75 Pan Coefficient = 0.24" = 0.02' Lake Average Precipitation using NEXRAD: = 0.00" = 0.00' Evaporation - Precipitation: = 0.24" = 0.02' Evaporation - Precipitation using Lake Area of 730 square miles is equal to 4711 cfs out of the lake. Lake Okeechobee (Change in Storage) Flow is 1664 cfs or 3300 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: 13.12 10.59 -NR- 0 0 0 0 -NR- (cfs) S193: ______ S191: 18.76 10.41 0 0.0 0.0 0.0 S135 Pumps: 11.33 10.39 0 0 0 0 0 (cfs) S135 Culverts: 0 0.0 0.0 North West Shore S65E: 21.03 10.22 1890 0.6 0.7 0.5 0.5 0.6 0.6 S127 Pumps: 13.71 11.22 0 0 0 0 0 0 (cfs) S127 Culvert: -NR- -NR- S129 Pumps: 12.64 12.02 0 0 0 0 (cfs) S129 Culvert: 0 0.0 S131 Pumps: 13.42 12.61 0 0 0 (cfs) S131 Culvert: Fisheating Creek nr Palmdale ______ -NR- nr Lakeport ______ C5: ______ 10.85 -NR- -NR- -NR- -NR- South Shore S4 Pumps: 10.56 10.51 0 0 0 0 (cfs) S169: 10.47 10.73 0 0.0 0.0 0.0 S310: ______ -NR- S3 Pumps: ______ -NR- 0 0 0 0 (cfs) S354: -NR- ______ -NR- -NR- -NR- S2 Pumps: 10.58 10.37 0 0 0 0 0 (cfs) S351: 10.37 10.58 -NR- -NR- -NR- -NR- S352: ______ -NR- -NR- -NR- -NR- C10A: -NR- 11.52 -NR- -NR- 8.0 -NR- -NR- L8 Canal PT 11.64 -662 _________________________________________________________________________ Temporary Pumps S351: 10.58 10.37 -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: 11.12 12.64 0.0 0.0 S47D: 12.72 10.72 22 0.0 S77: Spillway and Sector Flow: -NR- -NR- -NR- 5.0 -NR- -NR- -NR- Flow Due to Lockages+: -NR- S77 Below USGS Flow Gage -451 (TESTING) S78: Spillway and Sector Flow: 11.02 3.20 0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 0 S79: Spillway and Sector Flow: 3.28 1.21 1776 0.5 1.0 1.0 1.0 1.0 1.0 1.0 0.5 Flow Due to Lockages+: 1 Percent of flow from S77 -NR-% Chloride (ppm) 69 St. Lucie Canal (S308, S80) S308: Spillway and Sector Flow: 10.33 12.33 -933 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 0 S308 Below USGS Flow Gage -NR- S153: 18.89 12.29 -NR- -NR- 0.0 S80: Spillway and Sector Flow: 12.52 1.09 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Flow Due to Lockages+: 0 Percent of flow from S308 -NR-% Steele Point Top Salinity (mg/ml) 30 Steele Point Bottom Salinity (mg/ml) 26 Speedy Point Top Salinity (mg/ml) 16 Speedy Point Bottom Salinity (mg/ml) 14 + 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 1.03 S193: -NR- 0.00 0.00 -NR- -NR- Okeechobee Field Station: -NR- 0.00 0.33 S135 Pump Station: -NR- 0.00 0.14 S127 Pump Station: -NR- 0.00 0.95 S129 Pump Station: -NR- 0.00 1.29 S131 Pump Station: -NR- 0.00 0.41 S77: -NR- 0.00 0.00 -NR- -NR- S78: 0.00 0.04 2.84 3 0 S79: 0.01 0.84 2.49 165 0 S4 Pump Station: -NR- 0.00 0.00 Clewiston Field Station: -NR- 0.00 2.51 S3 Pump Station: -NR- 0.00 0.54 S2 Pump Station: -NR- 0.00 0.82 S308: 0.00 0.00 0.12 199 3 S80: 0.00 0.26 0.58 26 0 Okeechobee Average 0.00 0.00 0.63 (Sites S78, S79 and S80 not included) ______________________________________________________________________________ Okeechobee Lake Elevations 20 JUL 2008 10.34 Difference from 20JUL08 20JUL08 -1 Day = 19 JUL 2008 10.33 -0.01 20JUL08 -2 Days = 18 JUL 2008 10.31 -0.03 20JUL08 -3 Days = 17 JUL 2008 10.28 -0.06 20JUL08 -4 Days = 16 JUL 2008 10.23 -0.11 20JUL08 -5 Days = 15 JUL 2008 10.17 -0.17 20JUL08 -6 Days = 14 JUL 2008 10.04 -0.30 20JUL08 -7 Days = 13 JUL 2008 9.94 -0.40 20JUL08 -30 Days = 20 JUN 2008 9.27 -1.07 20JUL08 -1 Year = 20 JUL 2007 9.08 -1.26 20JUL08 -2 Year = 20 JUL 2006 12.22 1.88 ______________________________________________________________________________ Long Term Mean 30day Avearge ET for Lake Alfred (Inches) = 4.46 ______________________________________________________________________________ Lake Okeechobee Net Inflow (LONIN) Average Flow over the previous 14 days | Avg-Daily Flow 20JUL08 Today = 20 JUL 2008 -NR- MON | -NR- 20JUL08 -1 Day = 19 JUL 2008 -NR- SUN | -NR- 20JUL08 -2 Days = 18 JUL 2008 -NR- SAT | -NR- 20JUL08 -3 Days = 17 JUL 2008 -NR- FRI | -NR- 20JUL08 -4 Days = 16 JUL 2008 -NR- THU | -NR- 20JUL08 -5 Days = 15 JUL 2008 -NR- WED | -NR- 20JUL08 -6 Days = 14 JUL 2008 -NR- TUE | -NR- 20JUL08 -7 Days = 13 JUL 2008 -NR- MON | -NR- 20JUL08 -8 Days = 12 JUL 2008 -NR- SUN | -NR- 20JUL08 -9 Days = 11 JUL 2008 -NR- SAT | -NR- 20JUL08 -10 Days = 10 JUL 2008 -NR- FRI | -NR- 20JUL08 -11 Days = 09 JUL 2008 -NR- THU | -NR- 20JUL08 -12 Days = 08 JUL 2008 -NR- WED | -NR- 20JUL08 -13 Days = 07 JUL 2008 -NR- TUE | -NR- ______________________________________________________________________________ ______________________________________________________________________________ S65E Average Flow over previous 14 days | Avg-Daily Flow 20JUL08 Today= 20 JUL 2008 1142 MON | 1890 20JUL08 -1 Day = 19 JUL 2008 1101 SUN | 2014 20JUL08 -2 Days = 18 JUL 2008 1050 SAT | 1975 20JUL08 -3 Days = 17 JUL 2008 974 FRI | 1059 20JUL08 -4 Days = 16 JUL 2008 955 THU | 372 20JUL08 -5 Days = 15 JUL 2008 944 WED | 1054 20JUL08 -6 Days = 14 JUL 2008 900 TUE | 778 20JUL08 -7 Days = 13 JUL 2008 871 MON | 975 20JUL08 -8 Days = 12 JUL 2008 827 SUN | 307 20JUL08 -9 Days = 11 JUL 2008 841 SAT | 1225 20JUL08 -10 Days = 10 JUL 2008 753 FRI | 1161 20JUL08 -11 Days = 09 JUL 2008 675 THU | 1222 20JUL08 -12 Days = 08 JUL 2008 606 WED | 398 20JUL08 -13 Days = 07 JUL 2008 607 TUE | 1556 ______________________________________________________________________________ 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) 20 JUL 2008 -NR- -NR- 0 0 -NR- -1850 19 JUL 2008 -NR- -NR- 0 10 -NR- -3220 18 JUL 2008 -NR- -NR- 0 0 -NR- -2657 17 JUL 2008 -NR- -NR- 0 5 -13 -3268 16 JUL 2008 -NR- -NR- 0 0 -130 -918 15 JUL 2008 -NR- -NR- 0 4 -554 -2776 14 JUL 2008 -NR- -NR- 0 -NR- -NR- -2165 13 JUL 2008 -NR- -NR- 0 -NR- -NR- -NR- 12 JUL 2008 0 -NR- 0 -NR- 19 0 11 JUL 2008 0 0 0 4 -NR- -NR- 10 JUL 2008 0 -270 0 4 -NR- -704 09 JUL 2008 -990 -1943 0 5 -NR- -2207 08 JUL 2008 -715 -960 0 0 -450 -4373 07 JUL 2008 -NR- -NR- 0 2 -248 -3177 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) 20 JUL 2008 3524 -NR- -NR- -NR- -NR- -1312 19 JUL 2008 4205 -NR- -NR- -NR- -NR- -1203 18 JUL 2008 4263 -NR- -NR- -NR- -NR- -1142 17 JUL 2008 6489 -NR- -NR- -NR- -NR- -905 16 JUL 2008 7314 -NR- -NR- -NR- -NR- -982 15 JUL 2008 5783 -NR- -NR- -NR- -NR- -1318 14 JUL 2008 6791 -NR- -NR- -NR- -NR- -1400 13 JUL 2008 3657 -NR- -NR- -NR- -NR- -1254 12 JUL 2008 1952 -NR- -NR- -NR- -NR- -1344 11 JUL 2008 1138 -NR- -NR- -NR- -NR- -1157 10 JUL 2008 1756 -NR- -NR- -NR- -NR- -825 09 JUL 2008 3024 -NR- -NR- -NR- -NR- -907 08 JUL 2008 2917 -NR- -NR- -NR- -NR- -1021 07 JUL 2008 1047 -NR- -NR- -NR- -NR- -1207 *** 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 21JUL2008 @ 15:15 ** Preliminary Data - Subject to Revision **