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<br />( <br /> <br /> <br />Flood Damage Frevention ~~a5ure$ <br />Follo~inq the destructive September 1904 flood, the city <br />and concerned rail~oad companies cooperated in a project involvi~g <br />channel straightening and construction of concrete retaining walls <br />along the Purgatoire River throl.1gh the city's more congested urba n <br />are". In 1936 and 1938, theworl<s Progress IIdminhtratior.did <br />additional bank protection work, including repairs to sections that <br />had suffered flood damage. The Pino" Canyon Dam, completed in 1954 <br />by the Corps of Engineers, protects a highly developed area of about <br />40 acres in the northwestern and central sections of the City from <br /> <br /> <br />floods originating in the precipitous pinon Canyon Arroyo. This <br />earthEill detention dam will detain flood discharges up to and <br />including the Standard Project Flood, and an ungated outlet will drain <br />thereservoirwithinareasonabletiIlle. Dischargefromtheungated <br />outlet will not appreciably effect flood flows from the uncontrolled <br />area below the dam. The Corps' Trinidad Lake Project, located on the <br />Purgatoire River about four miles southwest of Trinidad, prOVides <br />regulation of flood discharges up to and includiog the Standard Pro- <br />ject Flood. potentially damaging flows will be regulated as necessary <br />to li~it down$tre~ flows to nonda~agin1 rates. Water ~torcd in the <br />flood control pool will be released at the maxim~ nondamaging rate. <br /> <br />Tl", Soil C,,,,.erv,,tl,,n S"""ioe ""n~t"ucteJ darr,s on Ci1rt-..on and :'ishers <br /> <br />Figure 12. P.OSPIT~L CANYON G P~~LL ARROYO BRIDOES <br />Top--u.s.Hi'lhwayI60-350culvcrtonllospit'lICanyo:\atMileO.29. <br />Bottom--LindenAv"nu"bricl"e,,,,Po;.'ellArrovoatMilel.3C. <br /> <br />peak Arroyos to prevent recurrent damag~s to the watershed and the <br />city of Trinidad. The structures are of earth construction with <br />ungated spillways that provide regul~tion of storms with a rcc~rrence <br />inter~al greater than the Intermediate Regional rloorl. ~n earthfill <br />dike and unlined vegetative channel, approximately 2,000 feet in <br />length, div<,rts a small tributary of Fishers Peak Arroyo into the <br />Fishers Peak Arroyo flood retarding structure. <br />The existing city zoningordinanoe (~. 851, Serhsof <br />1963) does not provide speoifically for the preservation of flood- <br />ways or control development in flced prone areas. However, as a <br />condition fo. pa.ticipatio'l in t~L'-' N"tic",,,l ,'load InsuU.nce program, <br />~ri"idad has llqreed to illlplelllent no-cx:! plain zoning in the reasonably <br /> <br />" <br /> <br />" <br />