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e e e OJ16~7 A TT ACHMENT C San Juan River Channel Protection Estimates for Short Term Test Flows Above 5,000 cfs Between Navajo Dam and the Confluence of the Animas River Specific Areas of Protection Estimated Cost $ 1. Bonds house and Navajo Dam Water Users Association Water System Earthen dike needed to divert water 3ft wide x 3ft high x 75 ft long = 675 ft3 = 25 yd3 materials to site $20/yd3 placement $20/yd3 Total $40 yd3 x 25 yd3 = $1,000 misc. Materials and work est to be $1,000 $2,000 2. Turley Manzanares Ditch Rebuild diversion structure *head works and gate control structure, low diversion dam, and 2,000 ft of 4 ft dia. pipe * range of cost $400,000 to $600,000 use $500,000 $500,000 This is an estimate based on personal judgement and site conditions. No field data was collected or design prepared. Cost sharing programs such as the COE Acequia Program could help pay for this work. A more temporary solution may also be workable with the ditch owners to get through a test. These could be paying for damaged facilities and lost crops if the diversion is injured or temporarily shoring up the existing structure. This would have to be worked out with the owners and the COE. 3. Chavez Fishing Cabin Move or raise the structure to protect from flooding *place structure on one foot high pillars and construct an access road $10,000 4. Mobile Home upstream of fairground bridge Construct an earthen dike to divert water from the home 2,000ft long x 2 ft high x 3 ft wide = 12,000ft3 = 445yd3 material, hauling and placement $40/yd3 $18,000 Total estimated cost for the test= $530,000 Note: This estimate is very rough to get a feel for the significance of the costs. Specific field data and designs are needed to get a actual cost estimate to do this work.