1. A Water Level Recorder
For Less Than 5 dollar

2. Six inch long, 1 inch diameter galvanized iron pipe
Requirements
Six inch long, 1 inch diameter galvanized iron pipe
Rubber cork
Rope with knots

3. How to make it Make a hook at top of the pipe
Attach rope with knots at 1 meter interval to the hook

4. Insert robber cork at bottom of the pipe (one inch from the bottom)
How to make it
Insert robber cork at bottom of the pipe (one inch from the bottom)

5. How to use it Lower the pipe in the borehole
When you hear a distinct ‘plop’ sound the cork has touched the water
With the help of the knots in the rope you can now measure water table depth

6. How to use it
This simple water level recorder costs less than five dollars to make. It is not as convenient as a standard water level recorder but nevertheless a very useful instrument to measure water level fluctuations

7. How to use it
You can also use the instrument to take a water sample from the borehole

8. Alternative…
Similar instruments can also be made with empty photo film canisters and measuring tape

9. Presentation based on work of KVGK Rao