ERMiT/Disturbed WEPP GIS Hillslope File
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Created by WeppCloud
Date: 2025-06-16

Watershed Name: lt_202012_6_Intervening_Area_Cedar_Flat_HighSev
# of Hillslopes: 25
# of Channels: 13

Watershed Centroid Location
   Latitude: 39.2189618374083
   Longitude: -120.109240946485

Climate Station
   State: CA
   Station: TAHOE CA                                 48758 0
   PAR: ca048758.par
   Elevation: 6230.0
   Latitude: 39.17
   Longitude: -120.15


Column Order & Descriptions
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HS_ID      WEPP hillslope ID
TOPAZ_ID   TOPAZ hillslope ID (not used)
UNIT_ID    Unit ID (empty; read by disturbed)
AREA       Area in hectares
ROWID_     Row identifier
SOIL_TYPE  Soil texture class (4-class; from SSURGO/STATSGO)
ROCK_PCT   Percent rock in soil
VEG_TYPE   Vegetation/landuse (undisturbed)
ERM_TSLP   Top gradient (%) for ERMiT
ERM_MSLP   Middle gradient (%) for ERMiT
ERM_BSLP   Bottom gradient (%) for ERMiT
SHRUB_PCT  Shrub cover (%) for ERMiT
GRASS_PCT  Grass cover (%) for ERMiT
BARE_PCT   Bare ground (%) for ERMiT
LENGTH     Horizontal slope length (m) from ERMiT
ASPECT     Aspect (°; not used)
BURNCLASS  Burn class for ERMiT: Unburned, Low, Moderate, High
UTREAT     Upper treatment (disturbed batch)
USLP_LNG   Upper slope length (m; disturbed batch)
UGRD_TP    Upper top gradient (%) (disturbed batch)
UGRD_BTM   Upper bottom gradient (%) (disturbed batch)
LTREAT     Lower treatment (disturbed batch)
LSLP_LNG   Lower slope length (m; disturbed batch)
LGRD_TP    Lower top gradient (%) (disturbed batch)
LGRD_BTM   Lower bottom gradient (%) (disturbed batch)


Slope parameters for Disturbed WEPP Batch File
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Slope is divided into four segments each 25% of total slope
"U" is for Upper, "L" is for Lower

UTREAT
    - description of management: OldForest, YoungForest, Shrub, Bunchgrass, Sod, LowFire, HighFire, Skid

USLP_LNG
    - length of the upper slope (50% of total slope) in meters

LTREAT
    - description of management: OldForest, YoungForest, Shrub, Bunchgrass, Sod, LowFire, HighFire, Skid

UGRD_TP
    - Upper top slope (%)

UGRD_BTM
    - Upper bottom slope (%)

LGRD_TP
    - Lower top slope (%)

LGRD_BTM
    - Lower bottom slope (%)

LSLP_LNG
    - length of the lower slope (50% of total slope) in meters


Slope parameters for ERMiT WEPP Batch File
------------------------------------------
According to ERMiT documentation the slope is divided into 
3 segments representing the top 10%, middle 80% and bottom 10%.

ERM_TSLP
    - Top slope (%)

ERM_MSLP
    - Middle slope (%)

ERM_BSLP
    - Bottom slope (%)

BURNCLASS
    - Burn class as Unburned, Low, Moderate, High

ROCK_PCT
    - Calculated percent rock from soil file