Aquaveo

AGWA Course 4: Landuse Change Workflow

Learn to evaluate the impact of land use changes on watershed discharge using the AGWA Landuse Change Workflow.

This course walks through the AGWA Landuse Change Workflow from start to finish. You will learn how to define areas of land use change, place evaluation points, run GSSHA simulations across multiple design storm scenarios, and compare discharge results between existing and modified land use conditions.

Course Steps

Create a New Landuse Change Workflow

Open the Workflows tab, create a new Landuse Change Workflow, name it, and click Begin to start the first step.

Define Areas to Change

Upload a reference image, draw polygons on the map, or upload a WGS84 shapefile to define land use change areas. Assign a land use classification to each polygon.

Choose Evaluation Points

Place named evaluation points on stream nodes where AGWA will calculate and compare discharge between the unchanged and changed land use conditions.

Select Flow Simulation Options

Choose one or more design storm scenarios — such as the 2-Year and 100-Year events — for AGWA to simulate.

Compute Flows

Review inputs, click Run to execute the GSSHA simulations, and monitor job status. AGWA runs once per scenario for both the original and changed land use conditions.

Review Results

Explore hydrographs, peak flows, and time series data across all evaluation points and scenarios. Export results using the Copy, CSV, and Print buttons, then click Finish.

Learning Objectives

By the end of this course, you will be able to:

Log in to AGWA and select a watershed model from the Dashboard Map
Create a new Landuse Change Workflow and configure its inputs
Define land use change areas using polygons, shapefiles, or reference imagery
Place evaluation points on stream nodes and assign design storm scenarios
Run GSSHA simulations and interpret hydrograph and peak flow results