Some thoughts on using online gage information.
1. Be thankful it is available, instead of having to call a hotline number or just guess.
2. AW, Eddyflower, etc. are nice but are only as good as the info provided by the boating public as to which gages to use, runnable levels, etc. If you want them to be accurate, become a streamkeeper for your local runs and fix the information for your runs. Also, particularly on AW, always check the time stamp on reading. Sometimes there are bugs in the system and the flow reading might be one or more days old.
3. Personally, I go straight to the source websites (USGS, DWR, etc.) to make sure I can the most up-to-date info - go to the individual gage page. Even then you have to check the time-stamp to make sure the reading is current.
4. Take river level predictions from AHPS with a grain of salt. Nice to have an idea of likely flows a few days out, but definitely a large margin of error.
5. If you a smart phone, RiverFlows is a great app that allows you to custom select the gages you want to regularly check and pulls the info straight from the source sites.
"It's All Good"