1. Hydroelectricity For TVHS

2. Pros and CONs
Cons
Hydroelectric power production require flooding of entire valleys and scenic areas.
Disrupts natural seasonal changes in he river, and ecosystems can be destroyed.
Ends flooding that help to clean out the silt in rivers, causing them to clog.
A dam being build in Quebec will end up flooding an area as large as Switzerland (Energy Laboratory).                 
Dams can break in a massive flash flood.
Pros
a relatively constant supply of water.
Producing Power.
Controls flooding & provides recreational activities such as boating fishing and swimming.
Simple design makes for inexpensive repairs and maintenance costs.
Produce inexpensive and clean power.
Renewable energy source, because the water is not destroyed by passing through the dam.
If needed, dams can be shut down instantly, where thermal plants take hours, and nuclear plants can take days!
Very few breakdowns. 

3. Hydroelectric power plants release water back into rivers after it passes through turbines.
Hydropower often requires the use of dams, which can affect the flow of rivers.

4. How To Generate Hydroelectricity
To generate hydroelectric power is by using water to spin a turbine, and others include the pump storage method, rivers and tides to generate their power.

5. Canada is the largest producer of hydroelectricity in the world

6. Hydroelectricity is one of the most environmentally ways of generating electricity.
It produces no smog or greenhouse gas emissions and is a renewable energy source

7. Would Hydroelectricity work for tvhs?
Hydroelectricity would be great for TVHS for the reasons of it saves energy. And it might have minor problems but would work fine.