Annual; abbreviated (Metric Units) USDA WATER EROSION PREDICTION PROJECT ------------------------------------- HILLSLOPE PROFILE AND WATERSHED MODEL VERSION 2020.500 May 1, 2020 TO REPORT PROBLEMS OR TO BE PUT ON THE MAILING LIST FOR FUTURE WEPP MODEL RELEASES, PLEASE CONTACT: WEPP TECHNICAL SUPPORT USDA-AGRICULTURAL RESEARCH SERVICE NATIONAL SOIL EROSION RESEARCH LABORATORY 275 SOUTH RUSSELL STREET WEST LAFAYETTE, IN 47907-2077 USA PHONE: (765) 494-8673 FAX: (765) 494-5948 email: wepp@ecn.purdue.edu URL: http://topsoil.nserl.purdue.edu HILLSLOPE INPUT DATA FILES - VERSION 2020.500 May 1, 2020 MANAGEMENT: p28.man MAN. PRACTICE: description 1 description 2 description 3 SLOPE: p28.slp CLIMATE: p28.cli Station: TAHOE CA CLIGEN VER. 5.32 5.32 SOIL: p28.sol *** CAUTION *** SOIL FILE FORMAT IS NON-STANDARD WEPP User is solely responsible for entering CORRECT values for BD, SSC, THETFC, THETDR *** CAUTION *** PLANE 1 Sky gravelly sandy lSPM ANNUAL AVERAGE SUMMARIES ------------------------ I. RAINFALL AND RUNOFF SUMMARY -------- --- ------ ------- total summary: years 1 - 30 2426 storms produced 39078.90 mm of precipitation 1 rain storm runoff events produced 6.43 mm of runoff 17 snow melts and/or events during winter produced 145.82 mm of runoff annual averages --------------- Number of years 30 Mean annual precipitation 1302.63 mm Mean annual runoff from rainfall 0.21 mm Mean annual runoff from snow melt and/or rain storm during winter 4.86 mm II. ON SITE EFFECTS ON SITE EFFECTS ON SITE EFFECTS --------------- --------------- --------------- A. AREA OF NET SOIL LOSS ** Soil Loss (Avg. of Net Detachment Areas) = 0.001 kg/m2 ** ** Maximum Soil Loss = 0.003 kg/m2 at 76.43 meters ** Area of Soil Loss Soil Loss MAX MAX Loss MIN MIN Loss Net Loss MEAN STDEV Loss Point Loss Point (m) (kg/m2) (kg/m2) (kg/m2) (m) (kg/m2) (m) ------------------------------------------------------------------------ 68.79- 76.43 0.001 0.001 0.003 76.43 0.000 69.55 C. SOIL LOSS/DEPOSITION ALONG SLOPE PROFILE Profile distances are from top to bottom of hillslope distance soil flow distance soil flow distance soil flow (m) loss elem (m) loss elem (m) loss elem (kg/m2) (kg/m2) (kg/m2) ------------------------------------------------------------------------ 0.76 0.000 1 26.75 0.000 1 52.74 0.000 1 1.53 0.000 1 27.52 0.000 1 53.50 0.000 1 2.29 0.000 1 28.28 0.000 1 54.27 0.000 1 3.06 0.000 1 29.04 0.000 1 55.03 0.000 1 3.82 0.000 1 29.81 0.000 1 55.80 0.000 1 4.59 0.000 1 30.57 0.000 1 56.56 0.000 1 5.35 0.000 1 31.34 0.000 1 57.32 0.000 1 6.11 0.000 1 32.10 0.000 1 58.09 0.000 1 6.88 0.000 1 32.87 0.000 1 58.85 0.000 1 7.64 0.000 1 33.63 0.000 1 59.62 0.000 1 8.41 0.000 1 34.39 0.000 1 60.38 0.000 1 9.17 0.000 1 35.16 0.000 1 61.15 0.000 1 9.94 0.000 1 35.92 0.000 1 61.91 0.000 1 10.70 0.000 1 36.69 0.000 1 62.67 0.000 1 11.46 0.000 1 37.45 0.000 1 63.44 0.000 1 12.23 0.000 1 38.22 0.000 1 64.20 0.000 1 12.99 0.000 1 38.98 0.000 1 64.97 0.000 1 13.76 0.000 1 39.74 0.000 1 65.73 0.000 1 14.52 0.000 1 40.51 0.000 1 66.50 0.000 1 15.29 0.000 1 41.27 0.000 1 67.26 0.000 1 16.05 0.000 1 42.04 0.000 1 68.02 0.000 1 16.81 0.000 1 42.80 0.000 1 68.79 0.000 1 17.58 0.000 1 43.57 0.000 1 69.55 0.000 1 18.34 0.000 1 44.33 0.000 1 70.32 0.000 1 19.11 0.000 1 45.09 0.000 1 71.08 0.001 1 19.87 0.000 1 45.86 0.000 1 71.85 0.001 1 20.64 0.000 1 46.62 0.000 1 72.61 0.001 1 21.40 0.000 1 47.39 0.000 1 73.37 0.001 1 22.17 0.000 1 48.15 0.000 1 74.14 0.002 1 22.93 0.000 1 48.92 0.000 1 74.90 0.002 1 23.69 0.000 1 49.68 0.000 1 75.67 0.002 1 24.46 0.000 1 50.44 0.000 1 76.43 0.003 1 25.22 0.000 1 51.21 0.000 1 25.99 0.000 1 51.97 0.000 1 note: (+) soil loss - detachment (-) soil loss - deposition III. OFF SITE EFFECTS OFF SITE EFFECTS OFF SITE EFFECTS ---------------- ---------------- ---------------- A. AVERAGE ANNUAL SEDIMENT LEAVING PROFILE 0.010 kg/m of width 2.555 kg (based on profile width of 247.279 m) 0.001 t/ha (assuming contributions from 1.890 ha) B. SEDIMENT CHARACTERISTICS AND ENRICHMENT Sediment particle information leaving profile ------------------------------------------------------------------------------- Particle Composition Detached Fraction Class Diameter Specific --------------------------------- Sediment In Flow (mm) Gravity % Sand % Silt % Clay % O.M. Fraction Exiting ------------------------------------------------------------------------------- 1 0.002 2.60 0.0 0.0 100.0 115.7 0.013 0.013 2 0.010 2.65 0.0 100.0 0.0 0.0 0.195 0.195 3 0.030 1.80 0.0 85.1 14.9 17.3 0.090 0.090 4 0.300 1.60 80.2 7.2 12.6 14.6 0.188 0.188 5 0.200 2.65 100.0 0.0 0.0 0.0 0.514 0.514 ------------------------------------------------------------------------------- Average annual SSA enrichment ratio leaving profile = 1.00