The company is based in Nebraska, there is not much grade there, you may be talking about diverting water from another state to get adequate elevation.
No.
The Nebraska company is HDR, an Omaha-based consulting engineering firm for hydroelectric generation.
http://www.hdrinc.com/locations/united-states/nebraska
Well I have to admit that I am guilty of not reading the article. Where I grew up all hydro was in mountainous areas I didn’t think to corralate it to an area like Nebraska.