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2. AWRA (American Water Resources Association) 2016 AWRA IWRM Award American Water Resources Association http://awra.org/about/awards/iwrm-award.html accessed
3. Bellingham Herald 2015 Our Voice: Yakima Basin Water Plan Needs Ongoing Push, March Bellingham Herald http://www.bellinghamherald.com/opinion/article22278753.html accessed
4. Bernton , H. 2015 Yakima Farmers Say Mismanaged Water Made Crop Losses Much Worse http://www.seattletimes.com/news/yakima-farmers-say-water-flow-or-lack-of-it-added-to-woes/ accessed
5. Curve Fitting to Step Functions;Burt;Journal of Farm Economics,1964