Electronics > Projects, Designs, and Technical Stuff

River water level

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coppercone2:
keep in mind the old ways, where you put a stick with a rule on it into the water. You can have a camera just take pictures of it.

Kind of fool proof

question being, what is your calibration procedure on sensors? A stick you can just look at. You would need to go out there once in a while and measure it manually to compare. And for official data gathering you might need to know effects of temperature and humidity on your sensors, and the effects of age, wheras a stick stays pretty convincing so long it does not sink.

I.e. you need to know that in 5 years time your sensor won't suddenly start giving incorrect readings at night when humidity is high or something like that. If your data is for someone important i.e. weather studies/global warming related etc, or a game commission for fishing. Sounds like the type of data that might end up in court one day.

todd_fuller:
You may want to check out envirodiy.org. They’re doing exactly what you want. Lots of good information on sensors, communications, stilling wells, etc to read stream levels.

Sparky49:
Sorry, I have little to offer other than it reminded me of this thread from a short while ago which may have some useful info for you:

https://www.eevblog.com/forum/chat/measuring-river-depth-water-level-and-flow-speed-(houszxcty-flooded)/msg2300583/#msg2300583

All the best.

B J:
RE:    (WINGONEER DC 5V Waterproof Ultrasonic Distance Sensor system  )           I have one and it is looking very good.  Had to give it a little extra time and help, but now appears to be very solid.    Wondering if anyone may know what the adjustment on the board is for?      Is it critical or can I play with it without messing it up?  If I know what it is for, would be a great help.

Gregg:
How about an aquarium air pump, a pressure transducer and a small tube to the bottom of the water.  The pressure is directly proportional to the depth of the water.  The pump and transducer can be located wherever convenient to power and the whole setup is quite foolproof.   :-/O

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