Alaska Rivers Shown on the Map: Colville River, Copper River, Kubuk River, Kuskokwim River, Noatak River, Porcupine River, Susitna River, Tanana River and Yukon River.
Alaska Lakes Shown on the Map: Becharof Lake and Iliamna Lake.
Alaska Stream and River Levels
The United States Geological Survey has a number of stream gages located throughout Alaska. These estimate stream levels, discharges and record them over time. This data is published on the web and many stations allow users to plot custom graphs. Get updated Alaska river and stream levels from USGS here.
Alaska Stream and River Level Alerts
The United States Geological Survey has a system that will send you an email message when flood levels are reached on any steam with USGS gaging equipment that you have selected. Sign up here to recieve Alaska stream and river level alerts.
Alaska Water Publications
The United States Geological Survey has a number of publications related to water use and water resources in Alaska. View the water resource publications for Alaska here.
Siltstone is a sedimentary rock composed mainly of silt-sized particles.
Topaz is a popular birthstone and the #8 mineral in the Mohs Hardness Scale.
Alaska Drought Map
The United States Geological Survey publishes updated drought maps on their website. There you can view a map that shows where below normal 7-day average stream flow conditions were recently recorded. The maps are updated daily. Get a current Alaska drought map here.