This page has two calculators. One is used to calculate the required pump pressure needed to generate a specified nozzle pressure. The other calculates the maximum amount of flow through a hose under the given operating conditions.
This calculator generates a report showing how much water is available one a fire scene on a minute-by-minute basis for the first two hours of a response. The inputs are the number, size, and cycle time of the tankers involved in the shuttle operation, as well as the initial response apparatus.
Very similar to the calculator above, but with some modifications to adapt it to the ISO 2-hour Water Deliver Test method. This version allows you to specify an initial water flow (usually 250 gpm) that starts 5 minutes after arrival on scene, along with an improved water flow that starts 15 minutes after arrival on scene.