Scott E. Morris

TL;DR: The most general lesson learned from this project is that sponsoring agencies and clients need to be informed of the many steps and sequencing of properly constructed, complex stream rehabilitation projects as well as the high time and cost requirements for these tasks.

Abstract: The surficial characteristics and precipitation regime of sparsely vegetated hillslopes in the montane zone of the Colorado Front Range suggest that rainsplash may be an important component of the surficial debris cascade. Site sediment flux data from two study periods reveal marked spatial and temporal variability. Comparison of these date with sediment movement data from splashcups suggests the following conclusions: (1) Detachment rates of the rainsplash process appear great enough to account for the sediment flux in the open Gerlach-type traps; (2) Areal extrapolation of rainsplash transport suggest that 88 per cent of the fine sediment flux in 1982 can be attributed to rainsplash; (3) Estimates of rainfall energy and changes in the potential energy of hillslopes by mass transport suggests a process efficiency of 0.05 per cent for rainsplash. If this procedure is applied to sediment flux values from open traps, the low precipitation-energy cascade of 1982 appears to be largely rainsplash-transported sediment. Extrapolation with the 1981 data suggests more aggressive overland flow erosion and transport.

TL;DR: In this paper, a simple model for estimating streamflow competence is used to assess the impact of water diversion on the retention of spawning gravels in Newhalem Creek, a small watershed in the Cascade Mountains.

TL;DR: In this paper, sediment flux data from 80 sediment traps located within five forested catchments in the Colorado Front Range suggest that sediment flux rates after forest fires are elevated by as much as three orders of magnitude compared to rates typical of undisturbed forested areas.