Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 4 of 4

Full-Text Articles in Physical Sciences and Mathematics

Slides: Development Of Shale: Water Resource Concerns And Policy Considerations, Katy Dunlap Nov 2010

Slides: Development Of Shale: Water Resource Concerns And Policy Considerations, Katy Dunlap

Shale Plays in the Intermountain West: Legal and Policy Issues (November 12)

Presenter: Katy Dunlap, Eastern Water Project Director, Trout Unlimited, Inc., Burdett, NY

24 slides


Slides: Forest Service Planning At A Crossroads; New Approaches To Old Recommendations, Rick Cables Jun 2010

Slides: Forest Service Planning At A Crossroads; New Approaches To Old Recommendations, Rick Cables

The Past, Present, and Future of Our Public Lands: Celebrating the 40th Anniversary of the Public Land Law Review Commission’s Report, One Third of the Nation’s Land (Martz Summer Conference, June 2-4)

Presenter: Rick Cables, Regional Forester, U.S. Forest Service - Rocky Mountain Region (Golden, CO)

23 slides


Colorado River Water: Mexico's Perspective On The Ongoing Negotiations, Mario López Pérez Feb 2010

Colorado River Water: Mexico's Perspective On The Ongoing Negotiations, Mario López Pérez

US-Mexico Negotiations on Improved Colorado River Management: An Update (February 19)

Presenter: Mario López, Engineering and Technical Standards Manager, National Water Commission of México

53 slides


Long-Term Response Of Groundwater Nitrate Concentrations To Management Regulations In Nebraska’S Central Platte Valley, Mary Exner Spalding, Hugo Perea-Estrada, Roy F. Spalding Jan 2010

Long-Term Response Of Groundwater Nitrate Concentrations To Management Regulations In Nebraska’S Central Platte Valley, Mary Exner Spalding, Hugo Perea-Estrada, Roy F. Spalding

School of Natural Resources: Faculty Publications

The impact of 16 years (1988–2003) of management practices on high groundwater nitrate concentrations in Nebraska’s central Platte River valley was assessed in a 58,812-ha (145,215-ac) groundwater quality management area intensively cropped to irrigated corn (Zea mays L.). Crop production and groundwater nitrate data were obtained from ~23,800 producer reports. The terrace, comprising ~56% of the study area, is much more intensively cropped to irrigated corn than the bottomland. From 1987 to 2003, average groundwater nitrate concentrations in the primary aquifer beneath the bottomland remained static at ~8 mg N/l. During the same period, average groundwater nitrate concentrations in the …