Low Pass Creek Road Re-Alignment and Wet Crossing Upgrade Project

The project aims to re-align Low Pass Creek Road and upgrade the wet crossing, addressing issues such as pebble count changes, degraded wet crossing due to normal use, and water quality concerns affecting the Colorado River Cutthroat Trout population. Proposed changes include culvert installation and budget allocations from various sources. Key images and data provide insights into the purpose, need, and challenges of the project.

• Project
• Road upgrade
• Wet crossing
• Water quality
• Trout

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Uploaded on Oct 01, 2024 | 0 Views

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1. LOW PASS CREEK ROAD RE-ALIGN AND WET CROSSING UPGRADE

2. PURPOSE AND NEED Pebble Count Material silt/clay Size Range (mm) 0 0.062 0.13 0.25 0.5 1 2 4 6 8 11 16 22 32 45 64 90 128 180 256 362 512 1024 2048 Count 20 6 5 1 1 2 0 1 0 1 4 2 2 3 5 16 16 8 6 1 percent 35% 0.062 0.13 0.25 0.5 1 2 4 6 8 11 16 22 32 45 64 90 128 180 256 362 512 1024 2048 4096 very fine sand fine sand medium sand coarse sand very coarse sand very fine gravel fine gravel fine gravel medium gravel medium gravel coarse gravel coarse gravel very coarse gravel very coarse gravel small cobble medium cobble large cobble very large cobble small boulder small boulder medium boulder large boulder very large boulder WET CROSSING DEGRADED THROUGH NORMAL USE CRCT POPULATION WAS GROWING NOW DECLINING 18% BED COMPOSITION CHANGED FROM COBBLE/GRAVEL TO FINES EMBEDDED COBBLE 46% BED ABOVE CROSSING STILL GRAVEL/COBBLE GRAZING NOT THE ISSUE 1% bedrock 0% 100% 100 Currant Creek 140600040401 Low Pass Creek Uwc479 Colorado River Cutthroat Trout 16 0 (2004) 64 32 30 (2011) 13 (2016) 1.05 (2011) 0.90 (2016) Wet ford upstream of site is contributing large sediment load. Plan to culvert crossing is underway down (FS) 55 0 (2005) (2016) 201 45 (2011)

3. WATER QUALITY ISSUES REDUCING CRCT POPULATIONS

4. PROPOSED CHANGES

5. BUDGET Source Destination Amount NPS Labor $38,211 WRI Material/Labor $43,464 USFS NEPA $13,596 USFS Aggregate $18,447 Total USFS Plantings $1,362 $115,080

6. QUESTIONS