2021-04-28_REVISION - M2019028

• Permit No: M2019028
• IBM Index Class Name: REVISION
• Doc Date: 4/28/2021
• Doc Name: Request for Technical Revision
• From: J&T Consulting, Inc.
• To: DRMS
• Type & Sequence: TR1
• Email Name: PSH
• Email Name: JLE
• Email Name: AWA
• Media Type: D
• Archive: No

Table 1. HEC-RAS Water Surface Elevation Results for the Cache la Poudre River
Gaifloway
Water Surface Elevation(ft,NAVD 88) WSEL Difference(ft)
XS Profile Flow(CFS) RiskMap Existing Proposed Proposed-RiskMap Proposed-Existing
7477 1% 4608.7 4609.0 4607.2 -1.4 -1.7
FW 4608.9 4609.1 4607.3 -1.5 -1.7
6758 1% 4607.4 4606.7 4606.1 -1.3 -0.6
FW 4607.9 4606.8 4606.5 -1.4 -0.3
5085 1% 4606.3 4606.1 4605.7 -0.7 -0.4
FW 10200 4606.5 4606.2 4605.9 -0.7 -0.3
3287 1% 4607.4 4605.3 4605.3 -2.1 0.0
FW 4607.9 4605.4 4605.4 -2.4 0.0
2256 1% 4606.3 4604.6 4604.6 -1.7 0.0
FW 4606.5 4604.6 4604.7 -1.9 0.0
1235 1% 4606.3 4604.2 4604.2 -2.2 0.0
FW 4606.5 4604.2 1 4604.2 1 -2.3 0.0
Table 2. HEC-RAS Water Surface Elevation Results for the South Platte River
..
a-.,--.,oway Water Surface Elevation(ft,NAVD 88) WSEL Difference(ft)
XS Profile Flow(CFS) CHAMP Existing Proposed Proposed-CHAMP Proposed-Existing
1403473 1% 4612.3 4612.3 4610.6 -1.7 -1.7
FW 4612.6 4612.6 4610.9 -1.8 -1.8
1402708 1% 4610.8 4610.8 4608.1 -2.7 -2.7
FW 4611.3 4611.3 4608.6 -2.7 -2.7
1402005 1% 4609.9 4609.9 4607.6 -2.3 -2.3
FW 4610.4 4610.4 4608.1 -2.3 -2.3
1401205 1% 40805 4608.7 4608.7 4607.1 -1.6 -1.6
FW 4609.0 4609.0 4607.4 -1.7 -1.7
1400374 1% 4607.1 4607.1 4606.3 -0.8 -0.8
FW 4607.5 4607.5 4606.7 -0.8 -0.8
1% 4605.E 4605.E 4605.5 0.2 0.2
1399218
FW 4606.0 4606.0 4605.9 -0.1 -0.1