The Riverside Shipyard was the Starfleet shipyard 2-1A construction facility located in Riverside, Iowa, Earth. The USS Gemini-A was constructed there in the 2280s. The shipyard was a location from where cadets for Starfleet Academy embarked.
In the alternate reality created by Nero, the USS Enterprise was constructed there in the 2250s. After the destruction of a sizable portion of the fleet by the Narada in 2258, it has been undergoing an expansion as production ramps up to rebuild a diminished but re-emerging Starfleet.