Lake Powell Water Database

The Lake Powell Water Database
It is 07:06:12 am MDT at Lake Powell, Utah on Saturday, July 31st, 2010. Today is day 304 of 365 for the Water Year 2010. We are 83% through the Water Year.
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For July 21st, 2010
Snowpack is 5300.0% of avg
TotalPrecip is 86.9% of avg

Water Summary
3636.68 on Jul 29, 2010
Last within 2" of this elevation on Jul 27, 2010

Snowpack Above
Lake Powell Database
Click for Details

Elevation & Content	Water Inflow Data	Water Release Data
Lake Powell is 63.32 feet below Full Pool (Elevation 3,700) By content, Lake Powell is 64.2% of Full Pool (24,322,000 af)	Total inflows for water year 2010: 7,695,486 acre feet This is 79.01% of the July 29th average of 9,740,452 acre feet	Total releases for water year 2010: 6,900,708 acre feet This is 83.85% of the minimum required of 8,230,000 acre feet
During WY 2010, storage at Lake Powell has risen by 151,494 AF and total inflows have exceeded total outflows by 794,778 AF
Reservoirs above Lake Powell are currently at 86.65% of capacity. Click for Details
Inflows for WY 2010 are 84.72% of WY 2009 Rivers feeding Lake Powell are running at 61.31% of the May 20th avg. Click for Details

Last 14 Measurements for Lake Powell

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP

07-29-2010 3636.68 -0.14 15614467 9266 13354 91.0 75.9 n/a

07-28-2010 3636.82 -0.02 15630719 10178 13394 93.0 73.9 n/a

07-27-2010 3636.84 -0.16 15633041 8954 13485 96.1 75.0 n/a

07-26-2010 3637.00 -0.13 15651631 8776 13555 96.1 73.9 n/a

07-25-2010 3637.13 -0.09 15666747 8910 11891 97.0 69.1 n/a

07-24-2010 3637.22 -0.09 15677218 7743 12582 91.9 73.9 n/a

07-23-2010 3637.31 -0.08 15687693 7887 13459 97.0 72.0 n/a

07-22-2010 3637.39 -0.14 15697009 7990 13374 93.0 73.9 84.0

07-21-2010 3637.53 -0.13 15713321 8296 13394 95.0 75.9 83.0

07-20-2010 3637.66 -0.10 15728478 8798 13496 96.1 75.9 84.0

07-19-2010 3637.76 -0.14 15740145 9165 13536 104.0 75.0 83.0

07-18-2010 3637.90 -0.06 15756488 9598 11869 105.1 75.9 82.0

07-17-2010 3637.96 -0.04 15763496 10118 12641 102.0 75.0 81.0

07-16-2010 3638.00 -0.18 15768170 10334 13317 106.0 75.9 81.0

Averages of List 3637.37 -0.11 15694901.64 9000.93 13096.21 97.38 74.37 82.5

Averages for July 31st

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP

Since Filled 3663.53 -0.11 19403600.43 12725.10 17622.93 96.83 71.50 80.4

All-Time 3643.37 -0.09 16976636.94 12650.43 15841.45 96.95 71.69 80.4

Last 10 July 31st's data records

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP

07-31-2009 3641.14 -0.06 16138064 11588 13428 98.1 68.0 80.0

07-31-2008 3633.00 -0.07 15191540 13381 14531 102.0 73.0 80.0

07-31-2007 3607.35 -0.23 12465417 7876 13234 93.0 68.0 81.0

07-31-2006 3606.85 -0.14 12415852 6941 13666 93.0 71.1 82.0

07-31-2005 3606.87 -0.06 12417834 11251 11755 98.1 73.9 80.0

07-31-2004 3579.70 -0.24 9913853 6690 14436 99.0 72.0 78.0

07-31-2003 3610.63 -0.19 12793807 6687 15871 93.9 73.0 82.0

07-31-2002 3634.24 -0.26 15333130 3480 15120 102.9 77.0 81.0

07-31-2001 3669.46 -0.14 19763890 5318 14060 93.9 72.0 79.0

07-31-2000 3682.12 -0.04 21568546 5832 8026 102.0 72.0 n/a

Averages of List 3627.14 -0.14 14800193.30 7904.40 13412.70 97.59 72.00 80.3

Accessibility of Primitive Launches and Other Sites
As of Thursday, July 29th, 2010 where elevation was 3636.68'

SITE/LAUNCH NAME MINIMUM SAFE
ELEVATION ABSOLUTE MINIMUM
USABLE ELEVATION CURRENT LEVEL VS.
ABSOLUTE MINIMUM CURRENT ACCESSIBILITY

Antelope Point 3587.00 3586.00 50.68 Above Open and Usable

Castle Rock Cut-Off 3612.00 3608.00 28.68 Above Open and Usable

Farley Canyon 3653.00 3649.00 12.32 Below Unusable, go to main marinas

Copper Canyon 3663.00 3660.00 23.32 Below Unusable, go to main marinas

Bullfrog to Halls Creek Cut-Off 3668.00 3665.00 28.32 Below Unusable, go to main marinas

Piute Farms 3682.00 3680.00 43.32 Below Unusable, go to main marinas

Blue Notch is unknown and really just shoreline launching at whatever point feels good. No minimum given except amount of courage it takes to reach this launch.

Measurements are taken at 11:59 pm of the date listed
Temperature data is from Wahweap, AZ
Water temperature data is from wayneswords.com*
CHANGE represents water elevation change from previous day

Units used in each measurement:
Elevation - Feet above sea level
Change - Feet difference over previous measurement
Content - Acre Feet
Inflow - Average Cubic Feet / Second over entire 24 hour period
Outflow - Average Cubic Feet / Second over entire 24 hour period
All Temps - Degrees Farhenheit
The Water Year runs from October 1 to September 30 of the next year
Acre Feet = 1 * Flow CFS
TP = Total Precipitation

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Copyright Summit Technologies, Inc.
Water data courtesy of US Bureau of Reclamation
*Water temp data is provided by Wayne Gustaveson
as measured in the a.m. at the Wahweap docks
*Air temp data is sourced from (Prev 24 Hr Extremes):
Page, AZ Weather
Weather forecast for Lake Powell, UT
All data is provisional and subject to review and modification
Call 1-800-752-8525 for up-to-date water level infomation
or go to USBOR Water Data for Lake Powell
USBOR Water Projections for Lake Powell
Current Snowpack Conditions above Lake Powell

For questions or requests, email Powell Support