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Last modified
1/26/2010 10:10:41 AM
Creation date
10/5/2006 4:40:29 AM
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Template:
Floodplain Documents
County
Statewide
Basin
Statewide
Title
Forest- Fire Devegetation and Drainage Basin Adjustments in Mountenous Terrain
Date
1/1/1977
Prepared By
Department of Geology University of New Mexico
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />Forest-Fire Devegetation and Basin Adjustments <br /> <br />Time and/or Event <br /> <br />PROCESS- RESPONSE MODEL OF DEVEGETATED FLWIAL SYSTEMS <br /> <br />STABLE CHANNELS <br />~ <br />FOREST FIRE <br />DEVEGETATION <br /> <br />I <br /> <br />SUMMER RUNOFF EVENTS <br /> <br />I <br /> <br />SEDIMENT SUPPLY <br />REDUCTION <br />I <br /> <br />FALL <br />FREEZE ~ THAW CYCLES <br /> <br />1 <br /> <br />II <br />II <br />'I <br />!, <br />" <br />U <br /> <br />WINTER SNOWPACK <br />8 STABILITY <br /> <br />1 <br /> <br />SPRING MELTING 8 <br />FREEZE-THAW CYCLES <br /> <br />1 <br /> <br />=.1 <br />;j <br />11 <br />!i <br /> <br />SUMMER REVEGETATION <br />8 RUNOFF <br />I <br /> <br />SEVERAL SEASONS <br />I <br />REVEGETATION ESTABLISHED <br />ON MESA TOPS <br /> <br />:1 <br /> <br />ii' <br />, <br />, <br />(, <br />~I <br />t1 <br />:1 <br />" <br /> <br />Meso - TOD Fluvial Sy"tems Frijoles CanyOn Fluvial Systems <br />RITO DE LOS CANYON MARGIN <br />HILLSLOPE CHANNEL FRIJOLES VAlLEY CHANNELS <br /> <br />D---o-,-~D----O ? <br /> <br />I I <br />t.. DEVELOPMENT' OF <br />HYDROPHOBIC LAYER <br /> <br />o BEDLOAD OJ~DB/ OJ <br />I~:~D I <br />lSTRIPPlNG OF t.. CHANNEL WIDENING <br />HYDROPHOBIC LAYER <br />D-----[]----D, _---O? <br />I I I <br />l.CHANNEL INCISION <br /> <br />[]SUSPENOEQ Ol [] -- 0 <br />LOAD ...J ~ 1'- <br />SUSPENDED ' <br />LOAO <br /> <br />DJ%I~Oi- [] --0' <br />I LOAD J L.._ I -- . <br />SUSPENDED I <br />LOAO <br /> <br />DEBRIS <br />DlSUSPENDED ITl DJR.O~ 0' <br />...J LOAD UJ~ I -- .J <br />$USP!NDED I <br />LOAO <br /> <br />SUSPEHom <br />LOAO <br />OJ RFOI OAn <br /> <br />LEGEND <br /> <br />rn:~:[]J---[] ? <br />l CHANNEL CUmNG <br />8 FILLING <br />O 11_, [J]-' [J]' <br />1---- :-"'\... I 1.........-' I J <br />.J _.J. I ~ I <br />l. REDUCTIOfrII OF .J <br />SEDIMENT SUPPLY I <br />t...VARIATIONS IN SEDIMENT <br />l STORAGE RI!:LATED TO <br />o.nTlNG . l"ILLING <br />COMPLEX RESPONSES , <br />BETWEEN TRUNK STRf:AM <br />. TRIBUTARIES GRADED <br />TO TRUNK STREAM <br /> <br />RELAnvE SEDIMENT <br />STORAGE POTENTIAL _ ---- NO FLOW <br /> <br />-flOW <br /> <br />1 DIRECTION OF <br />SEDIMENT <br />TRANSFER eft <br />GEOMORPHIC <br />RESPONSE <br /> <br />o <br />OJ <br />[] <br /> <br />EROSION <br /> <br />SEDIMENTATION <br /> <br />~ GEOMO~C RESPONSE <br /> <br />Figure 12. Process-response model for fluvial systems in Jemez Mountains. <br />Model illustrates seasona~ variations in Eluvial processes due to <br />devegetation. Boxes represent sediment-storage c~pabilities of <br />the Eluvial system, and arrows represent types and directions oE <br />sediment transfer in the fluvial system. Note that Mesa-top <br />streams are independent of subsequent adjustments made by <br />Frijoles Canyon streams. <br />
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