Weekly updates.

The U.S. Geological Survey (USGS) launched its new, online National Water Information System (NWISWeb), http://water.usgs.gov/nwis/.

The site allows the public to access more than 100 years of water data collected by the federal earth science agency. This data can be used to evaluate current water supplies and plan for future supplies; forecast floods and droughts; operate reservoirs for hydropower, flood control, or water supplies; evaluate and control water quality; navigate rivers and streams; and safely fish, canoe, kayak or raft.