|
Interpreting L-THIA's Results: How L-THIA Works
L-THIA is based
on computations of daily runoff obtained from
long-term climate records, soil data, CN value,
and land use of the area.
By applying the
method to actual and planned developments,
the long-term effects of past, present, and future
land use can be determined.
The basic information
required for the model is:
- Location (state and county): This is used to select local climate
data used in the
analysis.
- Area of actual and proposed land uses: This can be obtained
from paper or digital maps. Satellite images
and air photos can be used to determine the
land uses.
- Hydologic soil
groups for land use areas: These can be obtained
from the standard soils data layer in GIS or
from your local Soil and Water Conservation
District (SWCD).
|
