February - November 1997
September - December 1997
Prepared by:
Geographic Modeling and Systems Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois
H. Mitasova, L. Mitas, W.M. Brown, D. Johnston
Prepared for:
U.S.Army Construction Engineering Research Laboratories
S. Warren
Urbana, November 1997
1. Introduction......................................................................................................................................3
2.
Methods............................................................................................................................................4
2.1 Unit stream power based erosion/deposition
model (USPED)................................................4
2.2 Process-based simulation of water erosion (SIMWE).............................................................6
2.2.1 Impact of spatially uniform parameters in complex terrain............................................7
2.2.2 Transport and detachment capacity equations (V)............................................................9
2.2.3 Impact of spatially variable land cover (V)....................................................................11
2.2.4 Impact of temporal variability in land cover..................................................................12
2.2.5 Simulation of impact of terrain structures.....................................................................13
3. GIS tools (V)..................................................................................................................................14
4. Applications to military installations...........................................................................................16
4.1 Ft. Irwin...................................................................................................................................16
4.2 Ft. McCoy (V)..........................................................................................................................21
5. Conclusion, future directions........................................................................................................25
6. References......................................................................................................................................25
7. Full size figures (for printed version)...........................................................................................30
Note: Chapters (V) describe work performed for the PART V contract, the rest is for the PART IV contract.
Electronic version of this report is available at
www2.gis.uiuc.edu/erosion/reports/cerl97/rep97.html
All full size figures are available in electronic form as part of the electronic version of this report at: www2.gis.uiuc.edu/erosion/reports/cerl97/rep97.html
For illustration, we provide color hardcopies for the following selected figures:
Figure 1. Comparison of observed and predicted deposition pattern using 1D and 2D flow
Figure 2. Impact of increasing rainfall excess on erosion/deposition pattern
Figure 4. Impact of increasing critical shear stress on erosion/depostion pattern.
Figure 8. Simulation of water depth, sediment flow and net erosion/deposition for different land use alternatives.
Figure 12. Volume models of soil properties
Figure 21. Steady state water depth simulated by SIMWE.
Figure 23. Sediment flow and erosion/deposition rates predicted by SIMWE from 10m resolution DEM smoothed by RST