Software Tools

Basin Sizer
Basin Sizer Tool Image
Basin Sizer is a software program that assists users in sizing stormwater basins anywhere in California. The program calculates water quality volumes (WQVs) and water quality flows (WQFs) using a variety of methods and data from rainfall stations throughout the state. Project locations can be selected easily by zooming and panning across a map.

Struvite Tool
Struvite Tool Image
Struvite scale forms in wastewater digestion and post-digestion processes, often fouling equipment and obstructing pipes. Some facilities expend significant maintenance resources removing struvite accumulation and some facilities attempt to control struvite formation. The struvite tool is designed to calculate the struvite precipitation potential for a facility based on water quality parameters input by the user. It also allows the user to vary input parameters to determine "what if" scenarios when conditions are changed to control struvite precipitation. This tool is a must for struvite control planning. It runs within Microsoft Excel and comes with complete operating instructions.

Water Quality Planning Tool
Water Quality Planning Tool Image
The goal of the WQPT is to provide planners with an easy-to-use web site that has watershed information needed to create and comply with stormwater permits. Users can find a watershed through interactive maps or by entering the post-mile of a project location. For each watershed the following information is displayed:

  • Water bodies with TMDLs
  • Water bodies on the 303(d) list
  • Water quality standards based on the State Ocean Plan and Basin Plans
  • Location of Caltrans facilities (highways/freeways, maintenance facilities, park & ride lots, and rest areas)
  • Maps and aerial photographs of the watershed