Most Current GMD 4 Newsletters (Subscription & Address Change options are at bottom of page)
2009: (PDF Format only)
September/October (Vol. 32, No. 5)
July/August (Vol. 32, No. 4)
May/June (Vol. 32, No. 3)
March/April (Vol. 32, No. 2)
January/February (Vol. 32, No. 1)
2008: (PDF Format only)
September/October (Vol. 31, No. 5)
July/August (Vol. 31, No. 4)
May/June (Vol. 31, No. 3)
March/April (Vol. 31, No. 2)
January/February (Vol. 31, No. 1)
2007: (PDF Format only)
September/October (Vol. 30, No. 5)
July/August (Vol. 30, No. 4)
May/June (Vol. 30, No. 3)
March/April (Vol. 30, No. 2)
January/February (Vol. 30, No. 1)
2006:
September/October (Vol. 29, No. 5) PDF Version HTML Version
July/August (Vol. 29, No. 4) PDF Version HTML Version
May/June (Vol. 29, No. 3) PDF Version HTML Version
March/April (Vol. 29, No. 2) PDF Version HTML Version
January/February (Vol. 29, No. 1) PDF Version HTML Version
A Few Selected Articles of General (and longer-term) Interest from Our Pre-2004 Editions:
The entire High Plains aquifer is 174,050 square miles, or 112,032,000 acres covering parts of 8 states – SD, WY, NE, KS, CO, OK, TX and NM. 3.25 billion acft existed in 1980. The top 5 states (ranked by % of water owned) fare as follows:
Nebraska owns 63,650 mi2 (37%) of the aquifer area and in 1980, owned 65.5% of the drainable water in storage. From 1950 to 1997, the average water level change has been +2.3 feet.
Texas owns 35,450 mi2 (20%) of the aquifer area and in 1980, owned 12% of the drainable water in storage. From 1950 to 1997, the average water level change has been -41.1 feet.
Kansas owns 30,500 mi2 (17%) of the aquifer area and in 1980, owned 9.9% of the drainable water in storage. From 1950 to 1997, the average water level change has been -17.9 feet.
Colorado owns 14,900 mi2 (8.6%) of the aquifer area and in 1980, owned 3.7% of the drainable water in storage. From 1950 to 1997, the average water level change has been -10.1 feet.
Oklahoma owns 7,350 mi2 (4%) of the aquifer area and in 1980, owned 3.4% of the drainable water in storage. From 1950 to 1997, the average water level change has been -14.0 feet.
1. Plug those abandoned wells - check with the office for proper procedure
2. Control all irrigation tailwater
3. Chemigation permits required to chemigate
4. More than 1000 head capacity - you need a Stockwatering water right
5. Putting up a Pivot? - Check your place of use first
6. Idling your irrigation well? - look into the Water Rights Conservation Program
7. (GPM) X (Hours) X (.0001841) = Acft per Year.
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