The Natural Resources Conservation Service (NRCS) installs, operates and maintains an extensive, automated system to collect snowpack and related climatic data in the western United States called SNOTEL (for SNOwpack TELemetry). SNOTEL sensors collect hourly data on temperature, precipitation and snow water equivalent. Data can be displayed as tables or graphs for individual stations, drainage basins ... Full description.

This website, created and maintained by the Natural Resources Conservation Service, contains an interactive map containing climate information for each state. Users can click on states and find information and data for every county in every state. Data includes daily mean temperature, frost free days, growing season, and monthly temperature and precipitation. Users may also download data from this ... Full description.

This USGS report presents an overview of the interactions between ground water and surface water in a variety of terrains. It serves as a general educational document with the intention of helping agencies understand the basic science involved in the management and protection of aquifers and watersheds. The report describes the natural processes of ground water and surface water interactions and the ... Full description.

This site features a Flash animation that illustrates how to grid the earth with the latitude (parallel) and longitude (meridian) coordinate system. This resource is suitable for use in lectures, labs, or other teaching activities. Full description.

NOAA's nowCOAST is a web-based tool for viewing coastal and hydrologic data. The tool provides spatially-referenced links to real-time observations and NOAA forecasts for the US seaports, estuaries, coastal ocean, Great Lakes, and rivers. Data types include tides, wave heights, weather, stream flows and water quality. Users navigate the map by selecting locations and stations, then selecting the desired ... Full description.

This site presents a series of paleogeographic and plate-tectonic reconstructions that illustrate the broad patterns of the Earth's structural history. Reconstructions of North America, the Mediterranean, Central and Southern Asia, and global views are organized by both geographic region and time period and may be viewed by either category. There is also a Time Slice feature which gives a brief summary ... Full description.

This USGS site provides access to water resources data collected at approximately 1.5 million sites in all 50 states, the District of Columbia, and Puerto Rico. The site features real-time and historical data retrievable by geographic area for surface water, groundwater, and water quality conditions such as temperature, specific conductance, pH, nutrients, pesticides, and volatile organic compounds. ... Full description.

This site features several Flash animations that illustrate the concept of isopleths, or contour lines of equal value. Most of the animations are interactive and allow the user to interpret contour spacing, hachured lines, and valley/ridge placement. One animation allows the user to practice drawing contour lines. These resources are suitable for use in lectures, labs, or other teaching activities. ... Full description.

This site features QuickTime and Flash animations that address issues cartographers face as they try to fit a three-dimensional surface on a flat planar surface while making maps. Characteristics and distortions of cylindrical, conical, planar, and Goode's projections are discussed. These resources are suitable for use in lectures, labs, or other teaching activities. Full description.

This PowerPoint presentation is part of the Whitman College petrology course. This 50-slide presentation introduces layered mafic intrusions around the world. The chapter discusses various layered mafic complexes in cross section and plan view, and also describes stratigraphy within the complexes. The presentation further describes processes within the complexes, such as crystallization, differentiation, ... Full description.