A brief definition and explanation of hypoxia with special reference to the Gulf of Mexico hypoxic zone along the Louisiana-Texas coast as well as extensive links to USGS and other related information resources.
The report describes a strategy for monitoring, modeling, and research activities to support management decisions to improve water-quality conditions in the Mississippi River Basin, reduce hypoxia in the northern Gulf of Mexico, and improve conditions for
Information about the causes and impact of hypoxia with links to USGS and other Federal agency information and activities related to nutrients in the Mississippi River Basin and hypoxia in the Gulf of Mexico.
Vanadium and boron were detected at high and moderate concentrations in this area. High concentrations for these constituents were detected almost exclusively in samples collected in the Temecula Valley study area.
Links to real-time data for total dissolved gas, temperature, and barometric pressure in lower Columbia River in Oregon and Washington and to project reports.
Explanation of common water properties including temperature, pH, specific conductance, turbidity, dissolved oxygen, hardness and suspended sediment for students and general public.
Maps and explanations of continuous real-time data collection methods and results, including water temperature, turbididty, specific conductance, dissolved oxygen, pH, and stream discharge values.
A coordinated set of studies shows development of coastal features, aspects of marine water quality, and impacts of hurricanes along this section of important coastline.
Overview of Klamath ecological research and links to USGS Klamath studies on ground water, nutrients, sediment oxygen demand, and fish response to water quality, sucker ecology, publications, bibliographies, and data.
Summarizes measurements of ground-water chemistry that affect the vulnerability of aquifers to contamination. Data are from aquifers throughout the conterminous US and Alaska.
Site on the Chlorofluorocarbon Laboratory and its analytical services for CFCs, sulfur hexafluoride, dissolved gases including nitrogen, argon, methane, carbon dioxide, oxygen, and helium, and tritium/helium-3 dating.
Information and links to USGS and other Federal agency monitoring and research concerning the hypoxic zone in the northern Gulf of Mexico occurring along the Louisiana-Texas coast.