FLOOD10390 ‎(2)‎

• County: Moffat
• Community: Craig to Dinosaur National Monument
• Stream Name: Yampa River
• Title: Floodplain Information Report - Yampa River from Craig to Dinosaur National Monument
• Date: 4/1/1996
• Prepared By: CWCB
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Yampa River
Upstream of Maybell:

for 50-year frequency: k= 3027, c= 0.221
for 1 DO-year frequency: k= 7798, c= 0.114

Yampa River
Downstream of Maybell:

for 50-year frequency: k= 17.21, c= 0.855
for 100-year frequency: k= 11.38, c= 0.915

3.3 Equation Selection Process

The CurveFit computer program analyzes the input data using a library of 25 equations. The
output displays the constants and the correlation values for each equation. The best fit equations
are chosen based on the correlation value closest to 1.0. For this report an additional step was
included in the selection of an equation. Of all the possible equations which fell within a
correlation value greater than 0.95, the least complex equation was chosen. The same equation
format was selected for both the 50-year and 100-year flow calculations.

3.4 Hydrologic Findings

Table 3 shows the results of this analysis in tabular form. Figure 5 shows the relationship
between 50-year or 1 DO-year flow and drainage area, as described by these equations, in graphical
form.

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