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<br />II. STUDY AREA DESCRIPTION
<br />The Dirty Woman and Crystal Creek dminage basins are right-bank tributaries to
<br />Monument Creek in El Paso County, Colorado, Diny Woman and Crystal Creek's drainage area
<br />at Monument Creek is approximately 6.59 square miles of which approximately 5.04 square
<br />miles are included in the Dirty Woman drainage basin. The basin is divided intO seven major
<br />sub-basms. Dirty Woman Creek mainstem, CryStal Creek mainstem, Lake Fork of Dirty Woman
<br />Creek, Nonh Fork of Dirty Woman Creek, Middle Fork of Dirty Woman Creek, Upper Dirty
<br />Woman Creek, and South Fork of Dirty Woman Creek. Figure 2-1 shows the location of the
<br />Dirty Woman and Crystal Creek basins.
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<br />Basin Descnmion
<br />The Diny Woman and Crystal Creek drainage basins cover a total of 6.6 square miles in
<br />El Paso County including the Town of Monument The basin(s) !rend in generally a east to west
<br />or southwesterly dit"el;:tion, entering Monument Creek in two locations. CryStal Creek enters
<br />Monument Creek at Monument Lake, just west of the Town of Monument. Dirty Woman Creek
<br />enters Monument Creek just southwest of the Town of Monument near its crossing with Me
<br />Herman Road. Development has occurred throughout the entire basin. Large-Jot single family
<br />residential development has occurred throughout most of the basin areas with some higher
<br />density development along Imerstate 25 and within the Town of Monument. Development of
<br />the basins is approximately 85.90 percent complete.
<br />The ma,dmum basin elevation is approximately 7,505 feel above mean sea level. and
<br />falls to approximately 6,860 feet m the lower conflllC'nce wilh MUlIulllenl Creek. The
<br />headwaten; of the basins originate in conifer covered areas near the Palmer Divide.
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<br />This area of El Pa.<;Q County can be described, in general as high pl:1illS, with total
<br />precipitation amounts typical of a semi,arid region, Winters are generally cold and dry.
<br />Precipitation ranges from 14 to 16 inches per year, with the majority of this precipitation
<br />occurring in spring and summer in the form of rainfall. Thunderstorms are common during the
<br />summer months, and are typified by quick-moving low pressure cells which draw moi~ture from
<br />the Gulf of Me:tico into the rcginn, Average lempera.lUres range from about 300F in the winter
<br />to 150F in the summer. The relative humidity ranges from about 25 percent in the summer to 45
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