Water does not drains from hills to the streams, even after heavy rainfall [50 cms]

We have a situation in the part of western ghats, where a specific region of hill ranges, water drain is NILL from the hill to the respective stream paths.

We can approximate the average rainfall on the specific hill catchment area is about 50 - 100 cms in a period of 2 months.

Have visually ensured, no deforestation or no developments of civil constructions.

We, public encountered gradual decrease in water flow to the stream from past 10 years, but the heavy monsoon shower helps to revive the water beds by getting life of those streams back to normal.

I seek technical assistance and help to understand the cause of the absence of water drainage and revive the situation.