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: p82.man MAN. PRACTICE: description 1 description 2 description 3 SLOPE: p82.slp CLIMATE: p82.cli Station: TAHOE CA CLIGEN VER. 5.32 5.32 SOIL: p82.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 Ellispeak-Waca complST-FSL ANNUAL AVERAGE SUMMARIES ------------------------ I. RAINFALL AND RUNOFF SUMMARY -------- --- ------ ------- total summary: years 1 - 30 2457 storms produced 46163.50 mm of precipitation 9 rain storm runoff events produced 304.99 mm of runoff 595 snow melts and/or events during winter produced 12814.75 mm of runoff annual averages --------------- Number of years 30 Mean annual precipitation 1538.78 mm Mean annual runoff from rainfall 10.17 mm Mean annual runoff from snow melt and/or rain storm during winter 427.16 mm II. ON SITE EFFECTS ON SITE EFFECTS ON SITE EFFECTS --------------- --------------- --------------- A. AREA OF NET SOIL LOSS ** Soil Loss (Avg. of Net Detachment Areas) = 0.036 kg/m2 ** ** Maximum Soil Loss = 0.099 kg/m2 at 637.27 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) ------------------------------------------------------------------------ 67.08- 670.81 0.036 0.032 0.099 637.27 0.000 73.79 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) ------------------------------------------------------------------------ 6.71 0.000 1 234.78 0.017 1 462.86 0.052 1 13.42 0.000 1 241.49 0.017 1 469.57 0.048 1 20.12 0.000 1 248.20 0.017 1 476.28 0.044 1 26.83 0.000 1 254.91 0.016 1 482.99 0.039 1 33.54 0.000 1 261.62 0.016 1 489.69 0.037 1 40.25 0.000 1 268.33 0.014 1 496.40 0.040 1 46.96 0.000 1 275.03 0.012 1 503.11 0.043 1 53.67 0.000 1 281.74 0.009 1 509.82 0.046 1 60.37 0.000 1 288.45 0.007 1 516.53 0.049 1 67.08 0.000 1 295.16 0.004 1 523.23 0.053 1 73.79 0.000 1 301.87 0.002 1 529.94 0.056 1 80.50 0.001 1 308.57 0.002 1 536.65 0.059 1 87.21 0.001 1 315.28 0.002 1 543.36 0.063 1 93.91 0.002 1 321.99 0.002 1 550.07 0.067 1 100.62 0.003 1 328.70 0.002 1 556.78 0.071 1 107.33 0.004 1 335.41 0.002 1 563.48 0.075 1 114.04 0.005 1 342.11 0.004 1 570.19 0.077 1 120.75 0.006 1 348.82 0.006 1 576.90 0.079 1 127.45 0.007 1 355.53 0.009 1 583.61 0.081 1 134.16 0.008 1 362.24 0.013 1 590.32 0.083 1 140.87 0.009 1 368.95 0.017 1 597.02 0.085 1 147.58 0.010 1 375.66 0.021 1 603.73 0.087 1 154.29 0.011 1 382.36 0.026 1 610.44 0.090 1 161.00 0.011 1 389.07 0.031 1 617.15 0.092 1 167.70 0.012 1 395.78 0.037 1 623.86 0.094 1 174.41 0.012 1 402.49 0.043 1 630.56 0.097 1 181.12 0.012 1 409.20 0.050 1 637.27 0.099 1 187.83 0.012 1 415.90 0.055 1 643.98 0.096 1 194.54 0.012 1 422.61 0.057 1 650.69 0.093 1 201.24 0.013 1 429.32 0.058 1 657.40 0.090 1 207.95 0.014 1 436.03 0.059 1 664.11 0.087 1 214.66 0.015 1 442.74 0.060 1 670.81 0.084 1 221.37 0.016 1 449.45 0.061 1 228.08 0.017 1 456.15 0.057 1 note: (+) soil loss - detachment (-) soil loss - deposition III. OFF SITE EFFECTS OFF SITE EFFECTS OFF SITE EFFECTS ---------------- ---------------- ---------------- A. AVERAGE ANNUAL SEDIMENT LEAVING PROFILE 21.992 kg/m of width 1947.335 kg (based on profile width of 88.549 m) 0.328 t/ha (assuming contributions from 5.940 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 28.6 0.035 0.035 2 0.010 2.65 0.0 100.0 0.0 0.0 0.053 0.053 3 0.030 1.80 0.0 64.7 35.3 10.1 0.192 0.192 4 0.300 1.60 76.3 16.2 7.5 2.1 0.417 0.417 5 0.200 2.65 100.0 0.0 0.0 0.0 0.303 0.303 ------------------------------------------------------------------------------- Average annual SSA enrichment ratio leaving profile = 1.00