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AquaCalc 5000 - 30 years of reliability.

Calculate total stream flow
at the touch of a button.


Click here for more specifications...

Download the AquaCalc 5000 Advanced Manual


The AquaCalc 5000 is our oldest AquaCalc still in production. It counts the clicks and more.

Collecting stream data used to require juggling an armload of gadgets while counting clicks, writing notes, and performing calculations. Not any more.

Now there’s the AquaCalc 5000, a handheld computer that measures, records and calculates data with minimal user input. No more pencil, notepad and current meter table. No more calculator and stopwatch. No more “counting the clicks.”

AquaCalc does it for you - -automatically. You input the depth and distance at each station. AquaCalc measures velocity and elapsed time. Then, AquaCalc calculates total stream discharge and mean velocity. After stream measurement is complete, you can upload the data to a laptop or personal computer. It’s the fastest, easiest, most accurate stream measurement instrument available today.

This model has not changed in the last 20 years.

Faster, more accurate stream measurement.

AquaCalc improves the speed, accuracy and efficiency of your stream measurements. The user inputs the distance and depth. AquaCalc measures revolutions and elapsed time calculating velocity and discharge. When all the stations have been measured, simply press a button and AquaCalc gives you the total discharge and mean velocity. AquaCalc completely eliminates time-consuming hand calculations, saving an average of 20 minutes per cross section. You can save as much as two hours a day - enough time to measure another station.

AquaCalc saves even more time in error detection and re-calculation. With hand calculations, finding and correcting an error can take hours. But with AquaCalc, you can usually find and correct data entry errors in a few minutes.

Eliminates math and transcription errors.

With AquaCalc and accepted measurement procedures, the chance of error is virtually zero. Math errors are eliminated. To help prevent procedural errors, AquaCalc prompts the user with a “flag” when an unusual entry occurs. AquaCalc uploads the data to your laptop or personal computer, so transcription errors are eliminated. The result: highly accurate data with less time wasted finding and correcting errors.

Special features include:

Saves time in the office.

AquaCalc lets you upload your data to a laptop in the field or your personal computer in the office, eliminating data entry time. And, because there are no math errors, quality control review becomes a much simpler and quicker task.

Convenient in bad weather.

You’ll appreciate AquaCalc even more in bad weather. No more soggy note paper with hard-to-read notes! AquaCalc is easy to use in all weather conditions.

Durable construction.

AquaCalc is manufactured from high-quality materials to withstand the occasional drops, vibrations, pollutants, temperature extremes and humidity variations that occur with normal, everyday use. its weather-resistant design will stand up to prolonged exposure to sunlight, rain, sleet and snow.

Electronic output.

AquaCalc output looks similar to the USGS Measurement Notes Back Sheet. DOS and Microsoft WindowsTM-based programs can convert the data into a format similar to the USGS Measurement Field Notes Front Sheet. .

Optional accessories:


You really want an AquaCalc Pro Plus!

To get the latest in automated stream discharge measurements using current meters, look at the AquaCalc Pro Plus.

This newer version has all of the features of the AquaCalc 5000 plus a larger 16 line display, an easier to use interface, and the ability to review your measurements and print in custom formats using the AquaCalc Pro Analyzer tool.

Click here to look at all the features in the AquaCalc Pro

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AquaCalc 5000 Year 2020 / 1920 Problem and Information for version H8c and earlier

Users have identified a problem with the reported year in the AquaCalc 5000 output Please click here for more information.








Downloading AquaCalc 5000 Measurements

The AquaCalc 5000 measurements can be downloaded using AquaCalc DataLink, although the process is not as automated as with the AquaCalc Pro Plus. Instructions can be found in the AquaCalc 5000 Instruction Manual, and on  the Downloading the AquaCalc 5000 with DataLink page here:



AquaCalc 5000

AquaCalc LLC. telephone +1.916.372.0534 e-mail: sales@aquacalc.com

Need Accessories or Cables?

We have replacement parts and cables for the AquaCalc line of stream flow computers including the Digital Pygmy Magnetic Head retro fit your old Pygmy Current Meter with a new digital magnetic sensor.

Find Accessories and Cables here.

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