- Weathered bedrock can store a significant amount of water, which can then be released slowly over time.

- This water can be used by plants, which transpire it into the atmosphere, increasing evapotranspiration rates.

- Increased evapotranspiration can reduce the amount of water available for stream runoff.

Stream runoff

- Weathered bedrock can also act as a sponge, absorbing water during heavy rainfall events and releasing it slowly over time.

- This can help to reduce the severity of floods and droughts.

- However, if the bedrock becomes saturated, it can no longer absorb any more water, and this can lead to increased stream runoff.

Overall, the impact of water storage in weathered bedrock on evapotranspiration and stream runoff is complex and depends on a number of factors, including the type of bedrock, the amount of water it can store, and the climate.