Here are three links of interest to Chitina dipnetters;

This one shows river level at the bridge over the Copper River in Chitina:,1,1,1,1,1
The idea is if the river is rising or has just come up a bunch the fish don't move and so dipping is poor.

and this one is to the counter at Miles Lake:

and to F&G Chitina info with links there to fishing periods(closed days) and also supplemental periods(if there is one for that week):