Posted by: njrigg | April 14, 2010

TEEX US&R launches new iPhone Swiftwater Calculator

TEEX iPhone Swiftwater Calculator

In a swiftwater rescue scenario, it is useful to determine how far a person in the water has travelled downstream so that the search area may be narrowed and more effectively conducted. Although the math for determining this distance is relatively straightforward, it requires precious time that could be better used elsewhere. Mistakes may also be made in a high-stress situation, which may also cost time.

Texas Engineering Extension Service – TEEX US&R’s new Swiftwater Calculator takes all the guesswork out of determining water speed and distance traveled. By using the simple and friendly controls, a user can determine the water speed and the estimated distance traveled in just 4 tabs of the finger. This App is intended to be used by those emergency responders who have had appropriate swiftwater training. However, this App also works for anyone trying to find any item that may have entered the water and wants to know where they should start looking. Think of un-tied boats, ice chests, tubes, etc.

According to Brian Smith, TEEX Public Information Officer, Urban Search and Rescue Division, “As the state agency responsible for coordinating swiftwater rescue for the state of Texas, we have recently developed an application that responders can use to calculate the speed of swiftwater and then determine the maximum distance a person in the water could have traveled downstream. Our hope is to make this application a valuable tool to assist responders on scene and save valuable time when trying to calculate water speed and distance traveled.”

NOTE: This application is not a substitute for Swiftwater & Flood Rescue Training. Users of this application should be appropriately trained Emergency Responders, and should alert local responders or emergency response officials of any emergency incident. The information this Application provides is only an estimate based on the inputs of the user, and the publisher of this Application is not liable for any decisions or actions based upon the data contained herein.

The link to the application is

TURN AROUND, DON’T DROWN Swiftwater Calculator Support

  • $0.99
  • Category: Utilities
  • Released: Apr 13, 2010
  • Version: 1.0.1
  • 0.2 MB
  • Language: English
  • Seller: Texas Engineering Extension Service
  • © 2010 Texas Engineering Extension Service – USAR

Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iPhone OS 3.1 or later.



  1. I downloaded it to my iPod Touch and found I cannot reset the minute elapsed for a new case. They do calculate right when changing the est. Water entry but really, there should be an optional way to start with a clean slate, reset all, for a new set of calculations, if so desired.

    Amir K9CHP

    • Amir,

      Thank you for your feedback, we’ve actually already incorporated that idea into our newest release.

      TEEX US&R

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