You guys are missing a couple of things.
The ditch head has to be repaired soon so they can keep a constant water flow or get the water that they own down the ditch - this is priority #1.. The 2 high water years (2010 and 2011) degraded the structure to the point where a fix is necessary to get the water they need. The AHRA got a grant 2 years ago to fix the boat chute portion of it so that boats can pass after the fix and have been talking about it since then. This will be the 4th "fix" or clean up of the structure that I can remember..
The easement Andy H mentioned - is/was due to who used to own the ditch - they happen to be one of the most friendly local ranch/business families in the valley so they allowed the easement to happen and eventually a sold the small piece of the property on the river right to the AHRA...
All in all it needed a rebuild to first keep the head of the ditch intact and 2nd in the same rebuild change the boat chute for passage by boaters. It is very positive that the AHRA saw this coming and was pro active to include boating in the restructure. The rebuild by the ditch company is going to happen anyway and it is super cool to see them include boaters in the rebuild... No doubt Harv and crew will do a great job!
Harv I have been busy but will give you a call.. All I want to see in the fix is a nice 6' or so wave that resembles the M Wave with big auto return eddies