In this site, Martin Chaplin has brought together a selection of ideas concerning the complex behavior of water in hopes of encouraging both the understanding of water and further work. Some of the many ideas presented are: the structure of water, water anomalies, hydrogen bonding, the phase diagram of water, and water hydration. Full description.

U.S. Geological Survey (USGS) Water Resources of Pennsylvania provides information on current hydrologic conditions in Pennsylvania, including streamflow, ground-water, lake and reservoir, and drought conditions. There is also project information on water resources investigations and a watershed assistance program; USGS publications such as hydrologic data reports; maps and GIS data; and educational ... Full description.

This college course offers a basic introduction to the sciences of hydrology and geomorphology, which are two branches of Geography dealing with earth surface processes. This page contains two labs, a summary of each unit covered, a syllabus for the course, and example questions. Topics covered include plate tectonics, earthquakes and volcanoes, weathering, soils, mass wasting, fluvial processes, ... Full description.

This module discusses the hydrologic cycle and its impacts on the planet Earth. Additionally, the module addresses connections between the hydrologic cycle, climate and the impacts humans have had on the cycle. Full description.

This site from SERC's Starting Point presents sample Gallery Walk questions about the solar system. Topics examined include snowball earth (driving factors, deglaciation mechanisms, development of life), the composition, structure, fusion process, and features of some stars, the subsolar point, water rich comets, the circle of illumination, seasonal changes, time zones, distinguishing characteristics ... Full description.

This homework exercise, developed for an undergraduate geology course at Tulane University, leads students through the steps involved in determining the probability that a flood of a given discharge will occur in any given year. Students retrieve discharge data from U.S. Geological Services Internet sites for Dry Creek, LA, Rapid Creek, SD and Red River, ND to make their calculations. Full description.

This page introduces streams and channels and describes the geometry and dynamics of stream channels, including cross sectional shape, discharge, long profiles, base level, laminar and turbulent flow, the load of the stream, and floods. The site explains channel patterns, including straight, meandering and braided channels; erosion by streams; stream deposits, including floodplains and levees, terraces, ... Full description.

This portal provides links to selected United States Geological Survey (USGS) educational resources that may be useful to undergraduate educators. Many of these resources can be used directly in the classroom, as preparation for lessons or demonstrations, or as resources for teacher education and curriculum development. The resources are also searchable by state or region with the use of an interactive ... Full description.

This portal provides links to selected United States Geological Survey (USGS) educational resources that may be useful to educators in secondary school grades. Many of these resources can be used directly in the classroom, as preparation for lessons or demonstrations, or as resources for teacher education and curriculum development. Major topic areas include biology, geography, geology, and water ... Full description.

This portal provides links to selected United States Geological Survey (USGS) educational resources that may be useful to educators in primary school grades. Many of these resources can be used directly in the classroom, as preparation for lessons or demonstrations, or as resources for teacher education and curriculum development. Major topic areas include biology, geography, geology, and water resources. ... Full description.