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Ski Creek Erosion Control
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Last modified
7/6/2011 1:12:54 PM
Creation date
6/11/2008 3:29:48 PM
Metadata
Fields
Template:
Watershed Protection
Document ID
sev_0004
Contract/PO #
PO 08-29
County
Teller
Community
Pike's Peak
Stream Name
Upper Ski Creek
Basin
Arkansas
Sub-Basin
Fountain 11020003
Water Division
2
Title
Upper Ski Creek Watershed Erosion Control and Restoration Project
Date
12/7/2007
Prepared For
CWCB
Prepared By
Rocky Mountain Field Institute
Watershed Pro - Doc Type
Project Report
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Construction and implementation of all treatments was a success. In all, the project <br />produced the following results: <br />• 18 cross vane structures utilizing 150 tons of rock were completed to provide <br />channel stability and reduce erosion within the upper Sl~i Creek channel. <br />• 300 feet of highly unstable channel in upper Ski Creek was reconstructed. <br />• 2,775 feet of the upper Slci Creek channel and two tributary gullies were stabilized <br />by volunteer hand crews and RMYC through the use of 110 tons of rock and 4 <br />harvested trees to armor bai~lcs and build retaining walls and check dams. <br />• 8,600 sq/ft of erosion control matting, '/~ acre of seed and soil amendment, and <br />100 native transplants were applied to restore degraded areas. <br />• 39 volunteers (including two non-paid student interns) contributed 714 hours to <br />the completion of the project <br />3.0 Monitoring and Evaluation <br />In order to evaluate the effectiveness of the different erosion control prescriptions, RMFI <br />and FIN-UP personnel completed post-project monitoring of the project site in November <br />2007. Fine-scale longitudinal profiles of the lower and upper sub-reaches as well as <br />defining the new channel profile with the installed cross-vanes and "top-of-bai~lc" <br />treatments were completed and plotted against the pre-project longitudinal profile <br />conducted for the entire segment. Additionally, all fourteen of the channel cross-sections <br />were re-surveyed, and were also plotted against the pre-project data (Appendix B). <br />There are clearly some dramatic changes in a few of the cross-sections, most notably in <br />the upper sub-reach where the severely down-cut channel was repaired and new channel <br />gradient established through the installation of fill channel cross vanes. New cross <br />section surveys will continue to be conducted over the next three years to asses how well <br />the cross vanes and the bai~lc stabilization techiuques are working to stabilize the chamlel <br />and reduce erosion. <br />In addition to the channel morphology surveys, a post project Z-Wall{ pebble count of the <br />lower reach was also completed (Appendix C). It is interesting to note that much of the <br />11 <br />
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