In a presentation given in June 2009, the Army Corps of Engineers noted the Chatfield Reallocation Project’s low reliability and high mitigation costs. At Chatfield, dependable yield from “natural” sources was 0.<\/p>\n
A study covered in the presentation examined 82 reallocations at 29 lakes and found an average annual cost per acre-ft of $230, with a range of $50 to $980 per acre-ft. Using the same costing methods, the average annual cost for storage at Chatfiled would be $14,300 per acre-ft! (2009 prices)<\/p>\n
One would think that these\u00a0fundamental observations might prompt <\/strong>the Corps to conclude that Chatfield Reallocation is not a worthwhile project to pursue. <\/strong>Instead the Corps decided to issue a policy waiver to reduce the price it charges for storage. This change obviously makes the project appear more favorable than it really is.<\/p>\n A PDF version of slides used in the June 2009 is no longer available at its original address on the Corps website (http:\/\/www.corpsresults.us\/docs\/CleanWaterSupplyWorkshop\/Cone%20Chatfield-Storage-cost.pdf). However, a copy is available here<\/a>.<\/p>\n The only mention of zero dependable yield that we’ve found in the Draft Environmental Impact Statement is buried in Appendix BB:<\/p>\n Common measurements of dependable yield include: 50-year low flow; 2% chance; 98% reliability; 7-day-10-year low flow. At Chatfield, all of these measures of dependable yield are 0.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":" In a presentation given in June 2009, the Army Corps of Engineers noted the Chatfield Reallocation Project’s low reliability and high mitigation costs. At Chatfield, dependable yield from “natural” sources was 0. A study covered in the presentation examined 82 reallocations at 29 lakes and found an average annual cost per acre-ft of $230, with … Continue reading “Zero Dependable Yield!”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-659","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.savechatfield.org\/content\/wp-json\/wp\/v2\/posts\/659","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.savechatfield.org\/content\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.savechatfield.org\/content\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.savechatfield.org\/content\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.savechatfield.org\/content\/wp-json\/wp\/v2\/comments?post=659"}],"version-history":[{"count":6,"href":"https:\/\/www.savechatfield.org\/content\/wp-json\/wp\/v2\/posts\/659\/revisions"}],"predecessor-version":[{"id":663,"href":"https:\/\/www.savechatfield.org\/content\/wp-json\/wp\/v2\/posts\/659\/revisions\/663"}],"wp:attachment":[{"href":"https:\/\/www.savechatfield.org\/content\/wp-json\/wp\/v2\/media?parent=659"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.savechatfield.org\/content\/wp-json\/wp\/v2\/categories?post=659"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.savechatfield.org\/content\/wp-json\/wp\/v2\/tags?post=659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}