Greybull Valley Irrigation District

989 Hwy. 20 West, P.O. Box 44
Emblem, WY 82422
307-762-3555 Office
307-762-3620 Fax

e-mail:
gvid@tctwest.net

July 11, 2016

Acre Feet (Ac-Ft) vs. Cubic Feet per Second (CFS) When Placing Water Orders

Occasionally there is confusion when placing a water order regarding the terms acre feet (af) and cubic feet per second (cfs).  Water orders should be placed in cubic feet per second (cfs) not acre feet (af).  Storage accounts are updated daily.  Please be aware that the minimum water order that can be placed with GVID is ½ cfs and specific flow orders should be in whole or ½ cfs increments.  For example, you could order 3 cfs, 3½ cfs or 4 cfs, however GVID does not accept an order of 3¾ cfs.  Water orders are taken between 6:30 a.m. and 8:00 a.m. Monday through Saturday.  Water orders are tracked in 24 hour increments.  The minimum time frame for tracking water is 24 hours (one day).  Any order placed after 8:00 a.m. is documented as of the next day.

Below are basic definitions of acre feet and cubic feet per second that may be helpful in becoming more familiar with the two terms:

An acre-foot is the quantity of water required to cover one acre of land to a depth of one foot.  “Acre-feet” is the unit of volume used for stating the amount storage in GVID reservoirs. When full, GVID’s three reservoirs hold approximately 143,000 acre-feet of storage water.

Cubic feet per second (cfs), sometimes called secondfeet, is the most common unit used to express flow of water.  For example, on July 7th, 2016 the Greybull River at Meeteetse had a flow of approximately 430 cfs.

Common conversions

1 cfs for 24 hours = 1.9835 or approximately 2 acre-feet of water used

(2 ac-ft of storage is used in 24 hours when 1 cfs is ordered)

1 cfs = 448.8 (450) gallons per minute (gpm)

The storage water that you own is documented in acre feet.  You may own 100 ac-ft of water in Lower Sunshine.  Irrigating with 2 cfs of water equals 4 ac-ft of storage water used in 24 hours.  In the example of using 2 cfs to irrigate your property, approximately 25 days of water are available.  As stated above, please place your water orders in cfs and GVID will calculate the ac-ft used each day.

 

If you have any specific questions regarding your water situation, please call the office at 762-3555.

 

Thank you,

 

GVID Staff

 

 

 

Initial Consultation Document that summarizes known information about the 2015 Roach Gulch Hydro project.  

 

          Greybull Valley ICD Exhibits A-E

          Greybull Valley ICD Exhibit   F

          Greybull Valley ICD Exhibit  G

 

 

If you have any questions, please contact Ben Ellis ben.ellis@22wy.net. 307.733.0222.

 

 

Property Ownership Changes

When buying/selling property, please notify GVID at (307) 762-3555 or email gvid@tctwest.net and send a copy of the final deed upon completion of sale to GVID P.O. Box 44 Emblem, WY 82422. This will help us to keep accurate records for your information. Thank you!

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Current Reservoir Capacity Levels

Upper Sunshine Reservoir

Current Storage, July 14, 2016– 52,339 acre feet, 98% of capacity

Last Year, July 9, 2015 – 53,515  acre feet –100% of capacity

Lower Sunshine Reservoir

Current Storage, July 14, 2016– 56,378 acre feet, 100% of capacity

Last Year, July 9, 2015 – 56,378  feet – 100% of capacity

Roach Gulch Reservoir

Current Storage, July 14, 2016–  23,723 acre feet, 72% of capacity

Last Year, July 9, 2015 – 32,055 acre feet -98% of capacity

 

Total Water Stored

Current Storage, July 14, 2016– 132,440 acre feet

Last Year, July 9, 2015 –141,948   acre feet 

 

River Leveling

Daily Flows Starting 1/1/2016

 Daily Water Orders

 

 

Assessments By Year

Upper

Lower

Roach

 O&M

 B&I

 O&M

 B&I

 O&M

 B&I

2010

 $       3.25

 $       1.75

 $       3.25

 $    10.00

2011

 $       3.25

 $       2.25

 $       4.00

 $     9.25

2012

 $       3.25

 $       1.35

 $       2.25

 $       0.37

 $       4.00

 $    11.00

2013

 $       3.25

 $       1.35

 $       2.43

 $       0.37

 $       3.88

 $    11.00

2014

 $       3.46

 $       3.31

 $       4.02

 $    11.00

2015

 $       3.51

 $       0.62

 $       3.35

 $       0.17

 $       4.29

 $    11.00

2016

$       3.83

$        0.62

$        3.73

$       0.17

$        3.93

$     11.25

2017

$       3.83

$        1.24

$        3.73

$       0.34

$        4.31

$     11.25

 

 

 

 

Hydro Power Information

 

Hydro-Power Questions & Answers

 

 


For current Snotel information:
http://www.wcc.nrcs.usda.gov/snotel/Wyoming/wyoming.html

For the information on the Study the State is using to do the shrink:  http://library.wrds.uwyo.edu/wrp/94-05/ch-05.html

 

 

Any questions or comments are welcomed.
e-mail: gvid@tctwest.net