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<br />O~1480 <br /> <br />. <br /> <br />with any existing or planned water resource developments, There are <br /> <br />various water resource developments in the ~eneral vicinity of Trinidad <br /> <br />that function in control, regulation, or storage of surface runoff, <br /> <br />These developments are: <br /> <br />1, Local Flood Control Improvements. Subsequent to <br /> <br />the destructive flood of September 1904, the city of Trinidad and <br />interested railroad companies cooperated in straightenin~ the <br /> <br />Purgatoire River channel through the city and in constructing concrete <br /> <br />retaining walls along the channel through the more congested urban <br /> <br />area, An additional bank-protection project, and repairs to flood- <br /> <br />damaged sections were accomplished by the Works Progress Administration <br /> <br />in 1936 and 1938, respectively. The floodway waS severely damaged by <br />the flood of April 1942, and although it was later repaired to a <br />certain extent by the city, additional damages were experienced during <br />the spring flood of 1949, and the August 1950 flood, There are other <br />minor protective works along the river consisting of piling, jetties, <br />and dumped riprap which were installed by various interests for the <br />protection of public and private property, <br /> <br />2, Corps of Engineers Improvements. <br /> <br />a, John Martin Dam, John Martin Dam is located <br /> <br />on the Arkansas River just below the mouth of the Purgatoire River <br /> <br />and about midway between the towns of Las Animas and Lamar, Colorado, <br /> <br />The dam and reservoir serve in flood control, irrigation storage and <br /> <br />recreation, A small (10,000 acre-feet) permanent pool has recently <br />been authorized, <br /> <br />. <br /> <br />1-13 <br />