DO NOT USE THE NUMBERS!!! - THE ESTIMATES ARE PROVIDED FOR COMPARISON WITH OTHER RESEARCH EFFORTS AND ARE STILL UNDER DEVELOPMENT
Resolution of original data = 30m
Resolution of computation = 20m
---------------------------------------------------- INPUTS ---------------------------------------------------- Terrain: elevation: 556-854ft = 170-260m slope[deg]: min=0, max=19 average=1.8 Current Land use +-----------------------------------------------------------------------------+ | RASTER MAP CATEGORY REPORT | |LOCATION: courtcreek Tue Nov 23 13:51:08 1999| |-----------------------------------------------------------------------------| | north: 4547233.39648173 east: 744770 | |REGION south: 4530319.12043302 west: 722010 | | res: 19.9932341 res: 20 | |-----------------------------------------------------------------------------| |MASK:MASK in helena | |-----------------------------------------------------------------------------| |MAP: knox.lc*1 (cover.cc20 in helena) | |-----------------------------------------------------------------------------| | Category Information | | % | | #|description | acres| cover| |-----------------------------------------------------------------------------| | 1|High density urban . . . . . . . . . . . . . . . . . . .| 132.598| 0.21| | 3|Medium density urban . . . . . . . . . . . . . . . . . .| 50.490| 0.08| | 4|Low density urban. . . . . . . . . . . . . . . . . . . .| 660.522| 1.06| | 8|Row crop . . . . . . . . . . . . . . . . . . . . . . . .|24,180.535| 38.77| | 9|Small grains . . . . . . . . . . . . . . . . . . . . . .| 4575.238| 7.33| |11|Urban grass/parks. . . . . . . . . . . . . . . . . . . .| 1647.501| 2.64| |12|Rural grassland. . . . . . . . . . . . . . . . . . . . .|12,932.495| 20.73| |13|Decidious forest closed. . . . . . . . . . . . . . . . .|14,311.735| 22.94| |14|Decidious forest open. . . . . . . . . . . . . . . . . .| 2043.517| 3.28| |15|Coniferous forest. . . . . . . . . . . . . . . . . . . .| 52.170| 0.08| |16|Open water . . . . . . . . . . . . . . . . . . . . . . .| 624.754| 1.00| |18|Shallow Marsh/Wet meadow . . . . . . . . . . . . . . . .| 47.131| 0.08| |19|Deep marsh . . . . . . . . . . . . . . . . . . . . . . .| 9.485| 0.02| |20|Forested wetland . . . . . . . . . . . . . . . . . . . .| 232.689| 0.37| |22|Shallow water wetlands . . . . . . . . . . . . . . . . .| 874.833| 1.40| |-----------------------------------------------------------------------------| |TOTAL |62,375.694|100.00| +-----------------------------------------------------------------------------+ Note: wetlands cover only 1.87% area ---------------------------------------------------- Modified USLE R=150 K=0.3 C=... Row crop 0.5, Small grains = 0.3, grass = 0.003, forest closed = 0.0001, forest open=0.001 LS min=0 max=50 average=1.2 Average soil loss = 4.7 ton/acre year Area [%] with soil loss <=1t/ay (stable) is 63%; Area [%] with soil loss > 10t/ay is 16%; produces 87% soil loss [ton/year] +-----------------------------------------------------------------------------+ | RASTER MAP CATEGORY REPORT | |LOCATION: courtcreek Tue Nov 23 14:37:09 1999| |-----------------------------------------------------------------------------| | north: 4547233.39648173 east: 744770 | |REGION south: 4530319.12043302 west: 722010 | | res: 19.9932341 res: 20 | |-----------------------------------------------------------------------------| |MASK:MASK in helena | |-----------------------------------------------------------------------------| |MAP: 150*0.3*cfac.cc20*ls06.cc20n (husle.cc20n in helena) | |-----------------------------------------------------------------------------| | Category Information | | % | | #|description | acres| cover| |-----------------------------------------------------------------------------| | 0-1|stable . . . . . . . . . . . . . . . . . . . . . . |39,403.366| 63.17| | 1-3|low. . . . . . . . . . . . . . . . . . . . . . . . | 5448.787| 8.74| | 3-6|medium . . . . . . . . . . . . . . . . . . . . . . | 4131.102| 6.62| | 6-10|high . . . . . . . . . . . . . . . . . . . . . . . | 3148.076| 5.05| | 10-50|severe . . . . . . . . . . . . . . . . . . . . . . | 8132.077| 13.04| | 50-200|extreme (gullies). . . . . . . . . . . . . . . . . | 2112.287| 3.39| |-----------------------------------------------------------------------------| |TOTAL |62,375.694|100.00| +-----------------------------------------------------------------------------+ EVALUATION OF CONSERVATION STRATEGIES Alternative 1: reductions of C-factor on all agricultural fields from 0.5 to 0.4 (row crops) and 0.3 to 0.2 (small grains) (equivalent to P=0.8 and P=0.7 resp) Composition of land use : remains the same Erosion risk +-----------------------------------------------------------------------------+ | RASTER MAP CATEGORY REPORT | |LOCATION: courtcreek Wed Apr 5 11:39:08 2000| |-----------------------------------------------------------------------------| | north: 4547233.39648173 east: 744770 | |REGION south: 4530319.12043302 west: 722010 | | res: 19.9932341 res: 20 | |-----------------------------------------------------------------------------| |MASK:MASK in helena | |-----------------------------------------------------------------------------| |MAP: 150*0.3*cfac.cc20a1*ls06.cc20n (husle.cc20a1 in helena) | |-----------------------------------------------------------------------------| | Category Information | | % | | #|description | acres| cover| |-----------------------------------------------------------------------------| | 0-1|stable . . . . . . . . . . . . . . . . . . . . . . |40,225.831| 64.49| | 1-3|low. . . . . . . . . . . . . . . . . . . . . . . . | 6028.090| 9.66| | 3-6|medium . . . . . . . . . . . . . . . . . . . . . . | 4277.731| 6.86| | 6-10|high . . . . . . . . . . . . . . . . . . . . . . . | 3232.457| 5.18| | 10-50|severe . . . . . . . . . . . . . . . . . . . . . . | 7310.500| 11.72| |50-2000|extreme. . . . . . . . . . . . . . . . . . . . . . | 1301.085| 2.09| |-----------------------------------------------------------------------------| |TOTAL |62,375.694|100.00| +-----------------------------------------------------------------------------+ Alternative 2 cfac.cca2=if(husle.cc20o>10 && cfac.cc20o>0.003,0.003,cfac.cc20o) all areas with erosion risk higher than 10 and C>0.003 (row crops or grains) are turned to grass Composition of land use +-----------------------------------------------------------------------------+ | RASTER MAP CATEGORY REPORT | |LOCATION: courtcreek Thu Apr 6 10:14:23 2000| |-----------------------------------------------------------------------------| | north: 4547233.39648173 east: 744770 | |REGION south: 4530319.12043302 west: 722010 | | res: 19.9932341 res: 20 | |-----------------------------------------------------------------------------| |MASK:MASK in helena | |-----------------------------------------------------------------------------| |MAP: if(cover.cc20<=7||cover.cc20>=16,0.,0.)+if(cover.cc20==8,0.5,0.)+if... (| |-----------------------------------------------------------------------------| | Category Information | | % | | #|description | acres| cover| |-----------------------------------------------------------------------------| | 0-0.000001|other . . . . . . . . . . . . . . . . . .| 2632.503| 4.22| |0.000001-0.00015|dense forest . . . . . . . . . . . . . . .|14,363.905| 23.03| | 0.0002-0.0015|open forest. . . . . . . . . . . . . . . .| 2043.517| 3.28| | 0.002-0.0035|grass. . . . . . . . . . . . . . . . . . .|24,780.785| 39.73| | 0.02-0.35|small grains . . . . . . . . . . . . . . .| 1731.881| 2.78| | 0.4-0.5|row crops. . . . . . . . . . . . . . . . .|16,823.102| 26.97| |-----------------------------------------------------------------------------| |TOTAL |62,375.694|100.00| +-----------------------------------------------------------------------------+ Erosion risk +-----------------------------------------------------------------------------+ | RASTER MAP CATEGORY REPORT | |LOCATION: courtcreek Wed Apr 5 13:53:04 2000| |-----------------------------------------------------------------------------| | north: 4547233.39648173 east: 744770 | |REGION south: 4530319.12043302 west: 722010 | | res: 19.9932341 res: 20 | |-----------------------------------------------------------------------------| |MASK:MASK in helena | |-----------------------------------------------------------------------------| |MAP: 150*0.3*cfac.cca2*ls06.cc20n (husle.cc20a2 in helena) | |-----------------------------------------------------------------------------| | Category Information | | % | | #|description | acres| cover| |-----------------------------------------------------------------------------| | 0-1|stable . . . . . . . . . . . . . . . . . . . . . . . |49,347.752| 79.11| | 1-3|low. . . . . . . . . . . . . . . . . . . . . . . . . | 5736.314| 9.20| | 3-6|medium . . . . . . . . . . . . . . . . . . . . . . . | 4144.244| 6.64| | 6-10|high . . . . . . . . . . . . . . . . . . . . . . . . | 3147.285| 5.05| |10-50|severe . . . . . . . . . . . . . . . . . . . . . . . | 0.099| 0.00| |-----------------------------------------------------------------------------| |TOTAL |62,375.694|100.00| +-----------------------------------------------------------------------------+ Alternative 3 stream buffers with grass or forest 300m wide Composition of land use +-----------------------------------------------------------------------------+ | RASTER MAP CATEGORY REPORT | |LOCATION: courtcreek Thu Apr 6 10:15:15 2000| |-----------------------------------------------------------------------------| | north: 4547233.39648173 east: 744770 | |REGION south: 4530319.12043302 west: 722010 | | res: 19.9932341 res: 20 | |-----------------------------------------------------------------------------| |MASK:MASK in helena | |-----------------------------------------------------------------------------| |MAP: if((stream.buf300nn==1&&cfac.cc20o>0.003),0.003,cfac.cc20o) (cfac.cca3 i| |-----------------------------------------------------------------------------| | Category Information | | % | | #|description | acres| cover| |-----------------------------------------------------------------------------| | 0-0.000001|other. . . . . . . . . . . . . . . . . . .| 2632.503| 4.22| |0.000001-0.00015|dense forest . . . . . . . . . . . . . . .|14,363.905| 23.03| | 0.0002-0.0015|open forest. . . . . . . . . . . . . . . .| 2043.517| 3.28| | 0.002-0.0035|grass. . . . . . . . . . . . . . . . . . .|19,360.751| 31.04| | 0.02-0.35|small grains . . . . . . . . . . . . . . .| 3197.380| 5.13| | 0.4-0.5|row crops. . . . . . . . . . . . . . . . .|20,777.637| 33.31| |-----------------------------------------------------------------------------| |TOTAL |62,375.694|100.00| +-----------------------------------------------------------------------------+ Erosion risk +-----------------------------------------------------------------------------+ | RASTER MAP CATEGORY REPORT | |LOCATION: courtcreek Wed Apr 5 14:17:23 2000| |-----------------------------------------------------------------------------| | north: 4547233.39648173 east: 744770 | |REGION south: 4530319.12043302 west: 722010 | | res: 19.9932341 res: 20 | |-----------------------------------------------------------------------------| |MASK:MASK in helena | |-----------------------------------------------------------------------------| |MAP: 150*0.3*cfac.cca3*ls06.cc20n (husle.cc20a3 in helena) | |-----------------------------------------------------------------------------| | Category Information | | % | | #|description | acres| cover| |-----------------------------------------------------------------------------| | 0-1|stable . . . . . . . . . . . . . . . . . . . . . . |43,404.043| 69.58| | 1-3|low. . . . . . . . . . . . . . . . . . . . . . . . | 5221.038| 8.37| | 3-6|medium . . . . . . . . . . . . . . . . . . . . . . | 3688.251| 5.91| | 6-10|high . . . . . . . . . . . . . . . . . . . . . . . | 2650.190| 4.25| | 10-50|severe . . . . . . . . . . . . . . . . . . . . . . | 6115.336| 9.80| |50-2000|extreme. . . . . . . . . . . . . . . . . . . . . . | 1296.836| 2.08| |-----------------------------------------------------------------------------| |TOTAL |62,375.694|100.00| +-----------------------------------------------------------------------------+ Alternative 3a grassed stream buffers 420m wide +-----------------------------------------------------------------------------+ | RASTER MAP CATEGORY REPORT | |LOCATION: courtcreek Wed Apr 5 15:07:42 2000| |-----------------------------------------------------------------------------| | north: 4547233.39648173 east: 744770 | |REGION south: 4530319.12043302 west: 722010 | | res: 19.9932341 res: 20 | |-----------------------------------------------------------------------------| |MASK:MASK in helena | |-----------------------------------------------------------------------------| |MAP: 150*0.3*cfac.cca3a*ls06.cc20n (husle.cc20a3a in helena) | |-----------------------------------------------------------------------------| | Category Information | | % | | #|description | acres| cover| |-----------------------------------------------------------------------------| | 0-1|stable . . . . . . . . . . . . . . . . . . . . . . |45,630.847| 73.15| | 1-3|low. . . . . . . . . . . . . . . . . . . . . . . . | 4892.308| 7.84| | 3-6|medium . . . . . . . . . . . . . . . . . . . . . . | 3299.250| 5.29| | 6-10|high . . . . . . . . . . . . . . . . . . . . . . . | 2306.442| 3.70| | 10-50|severe . . . . . . . . . . . . . . . . . . . . . . | 5204.339| 8.34| |50-2000|extreme. . . . . . . . . . . . . . . . . . . . . . | 1042.508| 1.67| |-----------------------------------------------------------------------------| |TOTAL |62,375.694|100.00| +-----------------------------------------------------------------------------+ Alternative 4 grassed stream buffers + high erosion areas beyond buffers Composition of land use +-----------------------------------------------------------------------------+ | RASTER MAP CATEGORY REPORT | |LOCATION: courtcreek Thu Apr 6 10:16:40 2000| |-----------------------------------------------------------------------------| | north: 4547233.39648173 east: 744770 | |REGION south: 4530319.12043302 west: 722010 | | res: 19.9932341 res: 20 | |-----------------------------------------------------------------------------| |MASK:MASK in helena | |-----------------------------------------------------------------------------| |MAP: if((stream.buf300nn==1||husle.cc20o>10)&&cfac.cc20o>0.003,0.003,cfa... (| |-----------------------------------------------------------------------------| | Category Information | | % | | #|description | acres| cover| |-----------------------------------------------------------------------------| | 0-0.000001|other. . . . . . . . . . . . . . . . . . .| 2632.503| 4.22| |0.000001-0.00015|dense forest . . . . . . . . . . . . . . .|14,363.905| 23.03| | 0.0002-0.0015|open forest. . . . . . . . . . . . . . . .| 2043.517| 3.28| | 0.002-0.0035|grass. . . . . . . . . . . . . . . . . . .|26,772.824| 42.92| | 0.02-0.35|small grains . . . . . . . . . . . . . . .| 1408.389| 2.26| | 0.4-0.5|row crops. . . . . . . . . . . . . . . . .|15,154.555| 24.30| |-----------------------------------------------------------------------------| |TOTAL |62,375.694|100.00| +-----------------------------------------------------------------------------+ Erosion risk +-----------------------------------------------------------------------------+ | RASTER MAP CATEGORY REPORT | |LOCATION: courtcreek Wed Apr 5 15:08:00 2000| |-----------------------------------------------------------------------------| | north: 4547233.39648173 east: 744770 | |REGION south: 4530319.12043302 west: 722010 | | res: 19.9932341 res: 20 | |-----------------------------------------------------------------------------| |MASK:MASK in helena | |-----------------------------------------------------------------------------| |MAP: 150*0.3*cfac.cca4*ls06.cc20n (husle.cc20a4 in helena) | |-----------------------------------------------------------------------------| | Category Information | | % | | #|description | acres| cover| |-----------------------------------------------------------------------------| | 0-1|stable . . . . . . . . . . . . . . . . . . . . . . . |50,645.082| 81.19| | 1-3|low. . . . . . . . . . . . . . . . . . . . . . . . . | 5384.859| 8.63| | 3-6|medium . . . . . . . . . . . . . . . . . . . . . . . | 3695.464| 5.92| | 6-10|high . . . . . . . . . . . . . . . . . . . . . . . . | 2650.190| 4.25| |10-50|severe . . . . . . . . . . . . . . . . . . . . . . . | 0.099| 0.00| |-----------------------------------------------------------------------------| |TOTAL |62,375.694|100.00| +-----------------------------------------------------------------------------+ ============================================================================== USPED net erosion/deposition for transport capacity limiting case of sediment transport area with net erosion/deposition less than 1t/ay (stable) is 63% area with net erosion > 1t/ay is 25% area with net deposition > 1t/ay is 12% area with high net erosion > 10t/ay is only 7% +-----------------------------------------------------------------------------+ | RASTER MAP CATEGORY REPORT | |LOCATION: courtcreek Tue Jan 4 14:04:52 2000| |-----------------------------------------------------------------------------| | north: 4547233.39648173 east: 744770 | |REGION south: 4530319.12043302 west: 722010 | | res: 19.9932341 res: 20 | |-----------------------------------------------------------------------------| |MASK:MASK in helena | |-----------------------------------------------------------------------------| |MAP: qs16xcc20.dx+qs16ycc20.dy (usped.cc20 in helena) | |-----------------------------------------------------------------------------| | Category Information | | % | | #|description | acres| cover| |-----------------------------------------------------------------------------| | -200--50|extreme. . . . . . . . . . . . . . . . . . . . .| 1453.543| 2.33| | -50--10|severe . . . . . . . . . . . . . . . . . . . . .| 3130.884| 5.02| | -10--6|high . . . . . . . . . . . . . . . . . . . . . .| 1941.845| 3.11| | -6--3|medium . . . . . . . . . . . . . . . . . . . . .| 3322.865| 5.33| | -3--1|low. . . . . . . . . . . . . . . . . . . . . . .| 5988.073| 9.60| | -1-1|stable . . . . . . . . . . . . . . . . . . . . .|39,076.316| 62.65| | 1-3|low. . . . . . . . . . . . . . . . . . . . . . .| 2072.369| 3.32| | 3-6|medium . . . . . . . . . . . . . . . . . . . . .| 1307.606| 2.10| | 6-10|high . . . . . . . . . . . . . . . . . . . . . .| 883.331| 1.42| | 10-200|severe/extreme . . . . . . . . . . . . . . . . .| 3198.862| 5.13| |-----------------------------------------------------------------------------| |TOTAL |62,375.694|100.00| +-----------------------------------------------------------------------------+