The United States Geological Survey (USGS) has collected water-resources data at approximately 1.5 million sites across the United States, Puerto Rico, and Guam. The types of data collected are varied, but generally fit into the broad categories of surface water and ground water. Surface-water data, such as gage height (stage) and streamflow (discharge), are collected at major rivers, lakes, and reservoirs. Ground-water data, such as water level, are collected at wells and springs. Water-quality data are available for both surface water and ground water. Examples of water-quality data collected are temperature, specific conductance, pH, nutrients, pesticides, and volatile organic compounds. This resource includes both current and historical data. Data are retrieved by category of data, such as surface water, ground water, or water quality, and by geographic area. The user can further refine the data by selecting specific information and by defining the output desired. (author/ts)
Ohio Science Academic Content Standards (2002)
Earth and Space Sciences
Describe interactions of matter and energy throughout the lithosphere, hydrosphere and atmosphere (e.g., water cycle, weather and pollution).
Describe the finite nature of Earth's resources and those human activities that can conserve or deplete Earth's resources.
Explain that humans are an integral part of the Earth's system and the choices humans make today impact natural systems in the future.
National Science Education Standards
Earth and Space Science
Structure of the earth system (Grades 5 - 8)