High levees along both river courses, an extensive system of drainage ditches and diversion channels, and controlled lakes, pumping stations and cutoffs protect the area from flooding.
42.
An interesting effect of this diversion is that in times of high water direction of flow on the lower Cache reverses, flowing east to the diversion channel.
43.
The diverted water flows through the 9.3 km ( 5.8 mi ) South Bay Diversion Channel into the Rat River, which is in the Nelson River watershed.
44.
During periods of low flow, water is directed into the Diversion Channel, which flows into the lower Santa Ana River Channel and its attendant groundwater recharge facilities.
45.
Construction started in 1992 with the excavation of a diversion channel around the dam site and the implementation of a pair of cofferdams to protect the site from floods.
46.
The old diversion channel bypassed the meander, and while that is still in use, it is only used to pass water around the marsh section to relieve flood flows.
47.
To mitigate against flood risks, a flood diversion channel was constructed between the Nar and the Ouse Flood Relief Channel in 2001, at the point at which they are closest.
48.
Miller Stilling Basin, the most upstream of the facilities, is the location point from which flow from Carbon Canyon Channel is diverted into Carbon Canyon Diversion Channel or Carbon Creek Channel.
49.
There are also interesting historical sights on the river such as grinding holes made by the Nisenan people that once inhabited the area and diversion channels blasted out during the gold rush.
50.
A combination of drought, overgrazing and flooding eventually drove the remaining Paiutes from the area and prompted the settlers to attempt construction of a water diversion channel from the Sevier River drainage.
