Page 211 - Biosystems Engineering

GIS-Based W atershed Modeling Systems 189

Navigating through AGWA
Generate watershed outline Grid

Subdivide watershed into model elements Polygon

SWAT Choose the model to run KINEROS2

Intersect soils and land cover Look-up tables

Storm event from...
Daily rainfall from...
Generate • NOAA Atlas 2
• Gage locations
rainfall data • Predefined return-periods
• Thiessen map
• User-defined

Run the hydrologic model
& import results to AGWA External
to AGWA
Display simulation results

SWAT output KINEROS output
• Evapotranspiration • Runoff
• Percolation Visualization • Sediment yield
• Runoff, water yield for each • Infiltration
• Transmission loss model element • Peak runoff rate
• Sediment yield • Peak sediment discharge
FIGURE 5.3 Overview of AGWA tools and processes (Environmental Modeling
Systems, Inc. 2007).

(a two-dimensional hydraulic model used for water quality analysis
in rivers and reservoirs). In addition, two-dimensional integrated
hydrology (including channel hydraulics and groundwater interac-
tions) can be modeled with Gridded Surface Subsurface Hydrologic
Analysis (GSSHA).
Developed in cooperation with the Waterways Experiment Station
(WES), WMS provides graphical tools for use in the delineation of
watersheds and flood plains. Hydrologic models may be set up and