FLOOD01902

• County: Pitkin
• Community: Aspen
• Title: Drainage Facility Capacity Analysis of City of Aspen
• Date: 9/1/1998
• Prepared For: Aspen
• Prepared By: WRC Engineering, Inc.
• Floodplain - Doc Type: Project

TABLE 6: COLLECTOR STORM SEWER FLOW CAPACITY
STORM STORM STORM STORM
SEWER WETTED FLOW SEWER SEWER SEWER
REACH PIPE SIZE PERIMETER AREA MANNING'S SLOPE CAPACITY VELOCITY
LOCATION FROM TO DESIGNATION TYPE (inches) (ft) (ft2) n (Wft) (cfs) (fps)
Original 550 ft S. of Durant Spring & Main A CMP 36 9.42 7.07 0,024 0.019 50 7.1
Spring 350 ft S. of Duranl Main B
Spring Main 650 ft, N. of Ma;n C RCP 36 9.42 7.07 0.015 0.03 100.5 14.2
Cooper Gelena Mill 0 RCP 21 5.5 2.41 0.Q15 0.009 13.1 5.4
Mill S of Duranl Cooper E CMP 24 6.28 3.14 0.024 0.042 25.2 8
Mill Cooper Hyman F RCP 36 9.42 707 0.Q15 0.018 77.8 11
Mill Hyman Main G RCP 48 12.57 12.57 0.Q15 0.017 162.8 13
Mill Main Bleeker H, CMP 24 6.28 3.14 0.024 0.046 26,3 8.4
Mill Main Bleeker H2 RCP 48 12.57 12.57 0.015 0.046 267.8 21,3
Mill Main Bleeker HloIaI 294.1
Monarch & Bleecher Main Mill I CMP 24 6.28 3,14 0.024 0,017 16 5,1
Mill 81eeker Roaring Fork River J CMP 24 628 3.14 0.024 0.036 23,3 7.4
Main Aspen Garmisch K RCP 15 3.93 1.23 0.Q15 0.053 13 10.5
Hopkins Firsl Garm;sch l CMP 24 6.28 3.14 0.024 0.02 17.4 5.5
Garmisch Hopkins Main M CMP 36 9.42 7.07 0.024 0.008 32.4 4.6
Main Second SI. Garmisch N RCP 21 5.5 2.41 0.015 0.0035 8.2 3.4
Garmisch Main Hallem 0 CMP 36 9.42 7.07 0.024 0.007 30.3 4.3
Garmisch Hallan Francis P CMP 48 12.57 12.57 0.024 0.007 65.3 5.2
Francis Seventh Second Q HOPE 18 4.71 1.77 0.012 0.01 11.4 6.5
Francis Second Garmisch R HOPE 30 7.85 4.91 0.012 0,007 37.3 7.6
Francis & Garmisch Roaring Fork River S CMP 36 9.42 7.07 0.024 0.038 70.7 10
Storm sewer slope is assumed to be equal to the street slope,
Storm sewer is assumed to be flowing full with no surcharge
HOPE slorm sewer is assumed to have smooth walls.

1963 existing sewer and street capacity _xis
SlonnSswerCapacity- Table6

WRC Engineering
PN 1963

9/18198
10:06 AM