RainWaterCalc Web Site

Free Windows Application for Rainwater Harvesting System Design and Analysis

Comprehensive Rainwater Harvesting Software and Rainwater Calculator

RainWaterCalc Download Page

User Friendly Design

Assists with Rainwater Harvesting Designing

Components are Listed on Module

Generate Design Report
Useful Conversion Utility Module Incorporates Roof Filter Efficiency
Calculates Cistern Overflow Loss Incorporates Collection Efficiency
Calculates Amount of Make-Up Water Required Annual Rainfall Statistics can be Entered and Stored
Irrigation is Divided into Seasonal Use Calculates Irrigation for Native Plants 
Graphing Utility That Can Be Copied Installs Easily on Windows Platform
Find Installers and Designers Find Products and Components
Graphs Average and Median Rainfall Graphs Overflow Loss
Graphs Make Up Water Requirements Graphs Storage Activity
Graphs Duration Rainwater will Last Graphs Maximum Possible Rainfall Collection
Graphs Indoor Water Consumption Graphs Outdoor Water Consumption
Graphs Total Water Consumption Link To Basic Instruction Guide

Load and Modify Project Designs

Written by Greg Whitfield, an an ARCSA Rainwater Catchment Systems Accredited Professional

RainWater Calc Download  (14 Megabytes)

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Rainwater Harvesting Links
Sponsors:

Virginia Rainwater Harvesting Manual

The Rain Well

Texas Guide to Rainwater Harvesting

Arizona Guide to Rainwater Harvesting

Gray Water and Rain Water in Arizona

Evaluation of Contaminant Mixing in Rainwater Harvesting First Flush Diverters

Characterization of Wastewater Subsurface Drip Emitters and Design Approaches Concerning System Application Uniformity

NSF/ANSI Standard 61 Overview

A Waterwise Guide to Rainwater Harvesting, New Mexico

Runoff Reduction for Stormwater Management

Collection and Utilizing Rooftop Rainfall Runoff

City of Albuquerque, NM Rainwater Harvesting Guide

Rainwater System & Rain Garden Live Web Cam

Low Volume Irrigation Design and Installation Guide

Xeriscape 101

  The Enchanted Xeriscape

Irrigation Basics

Designing Cisterns for Green Roofs in Florida

Precipitation Maps
EPA Municipal Handbook Rainwater Harvesting Policies