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with Fountain Creek. The upper one-third of the basin is character- ized by shallow swales that convey overland flow across Peterson Airfield. Detention ponds under development within the airfield boundaries substantially limit peak flows from this area and have been considered in this study. The lower portions of the drainage are characterized by light industrial and residential development, wit~ the channel being concrete lined from Monica Drive to the confluence with Sand Creek. Pine Creek, a narrow, deep stream, ]01nS Monument Creek just north of Colorado Springs. The Pine Creek basin is 7 miles long and it has a drainage area of approximately 10 square miles. The upper reach of Pine Creek is an area of potential development. The lower reach borders the U.S. Air Force Academy. Hea~~ commercial develop- ment has taken place in the lower portions of the Pine Creek basin. Sand Creek has three main tributaries: Center, East Fork Subtrib- utary, and East Fork. East Fork Subtributary is tributary to East Fork Sand Creek, which has not been studied in detail above their co~fluence. These streams are typically shallow, wide, and sandy. Sand Creek is typical of many ephemeral streams in that the channel tends to meander over a period of years. Historical evidence of meandering is predominant in the lower reaches where there is rela- tively less topographic relief and the channel broadens into and becomes part of the flood plain. The drainage basin encompasses an area of approximately 53 square miles. Sand Creek runs through the co~nty in two areas: sout~ of Colorado Springs at the conflu- e~ce with Fountain Creek and east of Colorado Springs. The latter area is one of growth as Colorado Springs develops eastward. Spring Creek originates in east-southeastern Colorado Springs, flows southwesterly, and drains an area of approximately 8 square miles. A~ a point 0.5 mile upstream of the confluence with Fbun- tai~ Creek, Spring Creek enters El Paso County. The Spring Creek valley is relatively wide in the northern two-thirds of the basin, becoming deep and narrow in the lower one-third. The flood plain is ~ompletely developed with long reaches of concrete-lined channels in residential and co~mercial areas in addition to Valley Hi Golf Course. Templeton Gap Floodway drains an area of approximately 8.5 square miles of the northern portion of the Shooks Run basin. This Monu- ~~~~ Creek tributary originates in northeastern Colorado Springs, sout~east of the Austi~ Bluffs. A section of unincor~orated county la~d is located in the upper reach of the floodway. This area is a =~lly deve~opej residential area. T~e Security Creek, Widefield basi~s are adjacent and drain Security-Widefield co~munity. Creek, and Windmill Gulc~ drair.age the areas north and east of the Windmill G~lc~ drains into Security 7