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Last modified
1/25/2010 6:27:04 PM
Creation date
10/4/2006 11:41:01 PM
Metadata
Fields
Template:
Floodplain Documents
Designation Number
299
County
Costilla
Community
Unincorporated Costilla County
Stream Name
Trinchera Creek, Culebra Creek, Colstilla Creek
Basin
Rio Grande
Title
CWCB Review Report - Floodplain Information Report - for the Rio Grande, Trinchera Creek, Culebra Creek, Colstilla Creek, and Selected Tributaries in Costilla County
Date
3/1/1989
Designation Date
11/1/1989
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />. <br /> <br />Di vers ion Characters: <br /> <br />6. <br /> <br />7. <br /> <br />Previous Studies: <br /> <br />~ <br /> <br />J <br /> <br />does affect hydrology <br />does not affect hydrology <br />should not use stream data <br />from to <br /> <br />recor'd s <br /> <br />existing <br />title <br />title <br />ti tle <br /> <br />infor'mation <br /> <br />new cond i tions <br />n~'w methodologies <br />compari son prov ided <br />compatible wi th previous flows <br />significantly different statistically <br />confidence limits <br />90% confidence interval <br />50% confidence interval <br /> <br />FINDING: <br /> <br />The hydrologic analysis ~ meets __ does not meet the mlnlmum <br />standards of _.._ Rule 5.B. (detailed) or _~_ Rule 6.B, (approx.) <br /> <br />. <br /> <br />C. <br /> <br />Hydraulic Analysis <br /> <br />1. Water Surface <br />Profiles included: <br /> <br />NI f\ <br /> <br />2. Floodplain <br />Boundaries: <br /> <br />3. <br /> <br />Methodology: <br /> <br />4. Delineation <br />Procedures: <br /> <br />. <br /> <br />__ lo-year <br />50-year <br />_,.._ 100-year <br />500-year (optional) <br />__ frequency-elevation table <br /> <br />J 100-year <br />500-year (optional) <br /> <br />a. <br /> <br />b. <br /> <br />-T <br /> <br />-.8.' <br /> <br />step backwater method <br />HEC-2 <br />other <br />alternative method <br />published manual <br />assumed depth method <br />depth stated on maps <br />geomorphic features method <br />history flood method <br />rating curve method <br /> <br />j <br /> <br />flood contour method etc. <br />map contour method etc. <br />
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