# Run-of-river and small hydro and Water

Run-of-river and small hydro needs water; their prices have moved together.

Source page: https://www.materialinsights.org/links/run-of-river-and-small-hydro-and-water/

[Run-of-river and small hydro](https://www.materialinsights.org/energy/e_small_hydro/) (energy) and [Water](https://www.materialinsights.org/commodities/water/) (commodity): 2 relationships.

## How they are linked

### 1. Material need

*Physical flow · Direct · Water → Run-of-river and small hydro*

Building or running Run-of-river and small hydro needs water.

### 2. Price link: resource

*Cost and price · Weak · Both ways*

Output follows river flow, which peaks in the monsoon and snowmelt and falls in dry months. The US water index is a California market price, so it shows local scarcity rather than small hydro costs.

- **0.09** monthly change correlation
- **-0.28** 12-month change correlation
- **-0.02** fitted elasticity

Built from the site data on production routes, energy flows, industry value chains, input-output tables and prices.