Soil Moisture Method Results

Most reports can be displayed in either volume (e.g., m^3) , flow (e.g., CMS) or depth (e.g., mm) units. Depth units are derived by dividing the water volume by the area of each catchment or land class.

Land Class Inflows and Outflows

A detailed breakdown of inflows to and outflows from catchments and their sub land classes, including precipitation, snow melt, snow accumulation, surface runoff, irrigation, interflow, evapotranspiration, increase or decrease in soil moisture and base flow.

Observed Precipitation

The volume of precipitation that fell in the catchment

Snow Accumulation

The accumulated depth of snow pack in the catchment (snow depth is the same for all land classes within a catchment), in melt water equivalent (MWE) depth.

Snow Gauge

Historical observations for accumulated depth of snow pack in the catchment, if entered in the Snow Accumulation Gauge data variable. The accumulated depth of snow pack in the catchment.  Depending on the setting of  (snow depth is the same for all land classes within a catchment)

Snow Accumulation vs. Gauge

A side by side graph of Snow Accumulation results and Snow Gauge data, in melt water equivalent (MWE) depth.

Ponded Depth

For land classes with ponding, such as rice paddies, the depth of water on the surface of the land class

Infiltration/Runoff Flow

Volume of flows from catchments to surface and groundwater

Effective Precipitation for ET (including snowmelt)

The monthly precipitation that is available for evapotranspiration (minus snow accumulation or plus snow melt)

Area

The area for each of the land classes designated in the catchment

Temperature

The air temperature in the catchment

Albedo

Fraction of solar radiation striking a land class that is reflected--albedo increases as snow accumulates

Solar Radiation

Maximum theoretical daily incident solar insolation per unit area--a function of latitude and day of year

Net Solar Radiation

The daily net energy per unit area from sunlight falling on each catchment, including effects of albedo, air temperature and relative humidity

Reference PET

The value of the Penman-Monteith reference crop potential evapotranspiration

ETPotential

The amount of water that would be consumed by evapotranspiration in the catchment if no water limitations exist.

ETActual (including irrigation)

The actual amount of water consumed by evapotranspiration in the catchment, including water supplied by irrigation

Relative Soil Moisture 1 (%)

The amount of water in the top soil layer, as a percent of its maximum water holding capacity.

Relative Soil Moisture 2 (%)

The amount of water in the lower soil layer, as a percent of its maximum water holding capacity.

Flow to River No Irrigation

The total volume of flow from the catchment to the river, including runoff, interflow, and baseflow, assuming no irrigation of irrigated land.

Flow to River Full Irrigation

The total volume of flow from the catchment to the river, including runoff, interflow, and baseflow, assuming full irrigation of irrigated land.

Flow to GW No Irrigation

The total volume of flow from precipitation infiltrating to groundwater from the catchment, assuming no irrigation of irrigated land.

Flow to GW Full Irrigation

The total volume of flow from precipitation and irrigation infiltrating to groundwater from the catchment, assuming full irrigation of irrigated land.

Irrigation Return Flow Fraction to Surface Water

The average fraction of irrigation water supplied that flows to surface water.

Irrigation Return Flow Fraction to Groundwater

The average fraction of irrigation water supplied that flows to groundwater.

See also: Soil Moisture Method Calculation Algorithm