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Progress Iteuort #1: Stan Francisco Sedimentation Proiect Spring 2005: Secured funding; from: Colorado Water Protection Fund, Costilla County Conservancy District, Costilla County Road & Bridge and Colorado Acequia Association. Discussed sedimentation issues with acequia users to locate and identify most erosive area in Costilla County. The San Francisco Acequia was selected by the Colorado Acequia Association as the area in most need of sedimentation and flood mitigation. The Colorado Acequia Association contracted with a hydrologist and engineer, HydroDynamics, to complete a design for San Francisco Acegi.iia. Summer 2005: With completed design by HydroDynaanics, Colorado Acequia Association worked with Los Valles Youth Corp personnel far approximately one week to address erosion control along the acequia. Applied membrane with dirt cover along acequia banks and completed some grass planting as per design. Costilla County Road & Bridge set guard rails along acequia and roadside to prevent gravel from the county road from entering and impacting the Sim Francisco Acequia. Please see attached photos. Fa112005: Began construction of sediment traps and lined arroyo with rocks to help decrease the velocity of the flowing water in the arroyos, according to HydroDynamics design. The sediment traps also help alleviate sedimentation build up that would eventually accumulate in the acequia causing flooding which would in turn cause damage to irrigable land and crops. December 2005: Completed design recommendations as shown in the attached report by Hydro]Dynamics. The Colorado Acequia Association acquired a new hydroengineer to complete an erosion and sedimentation mitigation/prevention design for an addition .5 -1 mile section alor-g the same county road running parallel to the San Francisco Acequ~.ia. Projected projeci~ completion date: September 2006.