LakeTahoe - lt_202012_47_Tallac_Creek

Directory Views

/ wepp/runs wepp/output

Data Queries

subcatchments channels

Commands

Clear Locks

Tip: Press F8 to navigate back to the map.

Subcatchment Colormapping

Default

Slope/Aspect

Dominant Landcover

Dominant Soil

Select a channel or hillslope to view information

Modify Landuse

Click subcatchments to select/deselect.
Hold shift and click and drag for box selection.

Select landuse:

Rebuild the soils after changing managements.

WEPP Results

Hillslope Visualizations

Runoff Lateral Flow Baseflow

Soil Deposition/Loss

Total Phosphorus

Gridded Visualizations (for flowpath runs)

Soil Deposition/Loss

Minimum Channel Length (m)

Critical Source Area (ha)

Minimum Channel Length (ft)

Critical Source Area (acre)

Hillslope Clip Length (m)

Determine Per Hillslope

Single Landuse for Watershed

Determine Per Hillslope

Single Soil for Watershed (MUKEY)

Single Soil for Watershed (Database)

Initial Soil Saturation (fraction; used for single storm climates only):

Mukey for single soil:

Hillslopes with burn severity landuses will have soils altered to model burn severity.

Multi-Factor Ranking (Considers Distance, Elevation, and Climate)

"Vanilla" CLIGEN

PRISM Modified

Observed (DAYMET) [1980 - 2019]

Observed (DAYMET) with PRISM Revisioni [1980 - 2019]

Observed (GRIDMET) with PRISM Revision [1980 - Present]

Future (CMIP5) [2006 - 2099]

Single Storm

Observed Climate Database

Spatial Mode

Single Climate

Multiple Climates (this is slow)

Stochastic Climate Generation

Number of years to simulate:

Observed Climate Database

Future Climate Database

Observed

Start Year:

End Year:

Future (CMIP5)

Start Year:

End Year:

Single Storm (Cligen)

Enter Month Day and Year of Storm (mo da yr):

Enter Design Storm Amount in Inches (e.g. 6.30)

Enter Storm Duration in Hours (e.g. 6)

Enter Time to Peak Intensity (% Duration e.g. .4)

Enter Maximum Intensity Inches/Hour (e.g. 3.0)

Advanced Options

For more information on the advanced processing options see the documentation

Flowpath Processing

Running flowpaths produces a gridded soil deposition/loss map, but runtime is considerably longer.

Run Flowpaths

Hourly Seepage

Computes hourly instead of daily seepage calculations. Only applies to projects with 7778 soils (Not WEPP-PEP).

Run hourly seepage (wepp_ui.txt)

PMET

Computes evaporation and transpiration (ET) based on Penman-Monteith’s equation. The default is Penman’s equation.

Run PMET (pmetpara.txt)

Frost

Adjustment of effective hydraulic and thermal conductivity for snow, frozen-residue, and frozen-soil.

Run Frost (frost.txt)

Snow

Adjustments for snow.

Run Snow (snow.txt)

Rain Snow Threshold Temperature (C):

Density of new snow (g/cm³):

Snow Settling Density (g/cm³):

Baseflow Processing

Initial groundwater storage (mm):

Baseflow coefficient (per day):

Deep seepage coefficient (per day):

Watershed groundwater baseflow threshold area (ha):

Channel Parameters

Use variable channel critical shear as a function of channel slope (tcr.txt)

Constant CS parameters

Critical Shear (N/m²) based on Median Channel Bed Particle Size (mm):

Channel Erodibility (s/m; 1e-6 default):

Bedrock

ksat for restrictive layer:

Phosphorus Processing

Phosphorus coefficients determined by lt mod

Surface runoff concentration (mg/l):

Subsurface lateral flow concentration (mg/l):

Baseflow concentration (mg/l):

Sediment concentration (mg/kg):

Enter Observed Timeseries

Text should contain the following column headers matching totalwatsed e.g.:

Streamflow (mm)
Sed. Del (kg)
Total P (kg)
Soluble Reactive P (kg)
Particulate P (kg)

Header and data values should be delimited by commas

Unit Preferences

Subcatchment Colormapping

Modify Landuse

WEPP Results

Channel Delineation

Status

Summary

Outlet

Status

Summary

Subcatchments Delineation

Clip Hillslopes

Status

Summary

Landuse Options

Status

Summary

Soil Options

Status

Summary

Climate Options

Select Station

Filter

Climate Method

Spatial Mode

Stochastic Climate Generation

Observed Climate Database

Future Climate Database

Observed

Future (CMIP5)

Single Storm (Cligen)

Status

Summary

Watershed Preparation Report

WEPP

Flowpath Processing

Hourly Seepage

PMET

Frost

Snow

Baseflow Processing

Channel Parameters

Constant CS parameters

Bedrock

Phosphorus Processing

Status

Summary

Observed Data Model Fit

Enter Observed Timeseries

Status

Summary

Export

Zip Archive

Daily Waterbalance Report

Arcmap Resources

Watershed Preparation Details

ERMiT