Here are three links of interest to Chitina dipnetters;
This one shows river level at the bridge over the Copper River in Chitina:
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):