The original construction of the D-Hole, just downstream of the C Hole, cost about $17,000. The city supplied $7,000 and the Friends of the Yampa River supplied a comparable amount of cash. Native Excavating donated significant services to the project, and the Sheraton Steamboat donated much of the rock.
The D Hole was washed-out and the city of Steamboat footed the reconstruction bill, but the cost of reconstruction was lower -- between $3,000 and $4,000.
Designer Gary Lacy stood behind his design and he provided his services for the rebuilding of the D-Hole at no additional charge.
I don't know about the C Hole, but it couldn't have been musch different and it didn't get nearly as worked with high water.