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<br />Illustrations Captions
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<br />1, Map of the Buffalo Creek study area showing the extent of May 18, 1996 wildfire (heavy-
<br />dashed line) and selected flood sites, Flood-site locations are: 1, Buffalo Creek at Buffalo Creek;
<br />2, Sand Draw near Buffalo Creek; 3, Spring Creek near South Platte River, 4, South Platte River
<br />at South Platte streamflow-gaging station 06707500 (gage); and 5, South Platte River
<br />downstream from Spring Creek. lnset map at lower right shows the general location of the study
<br />area near Denver and Colorado Springs, Colorado, One-hour rainfall amounts in millimeters from
<br />bucket survey shown as "x," Isohyetal patterns for the July 12, 1996 rainstorm from the National
<br />Weather Service estimated from Doppler radar (NWS-WSR-88) showing maximum 1-hr rainfall of
<br />about 80 mm,
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<br />2, Map of Buffalo Creek showing rainfall-bucket survey data and isohyetal pattems for the July
<br />12, 1996 rainstorm from paleohydrologic interpretations, Paleohydrologic rainfall estimates were
<br />made four days after the storm,
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<br />3, Photographs showing hillslope rill and gully development for 1-hr rainfall amounts for July 12,
<br />1996 of: a,) less than about 25 mm of rain with minimal rills; b,) about 50 mm of rain produce 75
<br />mm by 50 mm rills; c,) about 75 mm of rain produced extensive rilling and about 500 mm deep
<br />gully formation; and d,) gully development up to 1 m deep and 3 m wide, which was used to infer
<br />the area of maximum rainfall of at least 115 mm in an hour (fig, 2),
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<br />4, Maps of Buffalo Creek showing isohyetal pattems for the July 12, 1996 rainstorm using
<br />Doppler radar (NWS,WSR-88) developed by Henz (1998), Maximum 1-hr rainfall was
<br />estimated to be about 130 mm and the total rainfall was about 170 mm for July 12, 1996,
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<br />5, One-hour rainfall frequency relation for Buffalo Creek developed by Diller (1997) including the
<br />estimated maximum 1-hr rainfall of about 160 mm for Buffalo Creek on July 12, 1996 (Henz,
<br />1998),
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<br />6, Schematic cross section with hydraulic properties for the July 12, 1996 flood in Buffalo Creek
<br />near the North Fork South Platte River at Buffalo Creek, Colorado,
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<br />7, Upstream view of Spring Creek on July 16, 1997 with the South Platte River in the foreground
<br />(flow left to right), Flood-deposited sediments were about 1,5 m thick at the center of the fan,
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<br />8, Downstream view of Shinglemill Creek near Buffalo Creek showing a 600-mm diameter, flood-
<br />transported boulder lodged in a 1-m diameter cottonwood tree, The boulder is 2,5 m above the
<br />channel bed (at the tree) and about 1,5 m above the high-water marks from the July 12,1996
<br />flood,
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<br />9, Upstream view of Sand Draw about 1 km upstream from Buffalo Creek showing distinct black,
<br />burn boundary from the May 18, 1996 wildfire, The boundary was used to define pre-fire,
<br />channel,bed levels and estimates of the amount of channel change at this flood (about 0,5 m
<br />here),
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<br />10, Relation between peak discharge and contributing drainage area for rainstorms in 1996 and
<br />1997 in the Buffalo Creek area, Colorado, Lines show approximated 1-hour storm rainfall for
<br />burned and unburned basins, Flash,flood data for extreme rainstorms for similar, unburned
<br />basins in the Colorado Front Range foothills help assess the effects of the fire on flooding in
<br />Buffalo Creek,
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<br />11, Flood-frequency relations for pre-fire basin conditions for Sand Draw at Buffalo Creek (FEMA,
<br />1986) and the South Platte River at South Platte (06707500) from an frequency analysis of
<br />annual peak-flow data, Peak discharges for the July 12, 1996 flood for Sand Draw and at the
<br />South Platte River at South Platte also are shown,
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