Complex sentence: The spring house was built on Otter Spring in 1933 as a Civilian Conservation Corps project; it was originally built to supply water to the CCC's Waubikon Lake Camp but was insufficient for that purpose.
Split into simpler sentences: The spring house was built on Otter Spring in 1933 as a Civilian Conservation Corps project. It was originally built to supply water to the CCC's Waubikon Lake Camp but was insufficient for that purpose.