Howard A Perlman
Science and Products
A huge amount of water exists in the ground below your feet, and people all over the world make great use of it. But it is only found in usable quantities in certain places underground -- aquifers. Read on to understand the concepts of aquifers and how water exists in the ground.
When looking at the location of rivers and the amount of streamflow in rivers, the key concept is the river's "watershed". What is a watershed? Easy, if you are standing on ground right now, just look down. You're standing, and everyone is standing, in a watershed.
Water, like everything else on Earth, including you, is full of bacteria. Some bacteria are beneficial and some are not. Escherichia coli (E coli) bacteria, found in the digestive tract of animals, can get into the environment, and if contacted by people, can cause health problems and sickness. Find out the details here.
The water cycle for kids
The U.S. Geological Survey (USGS) and the Food and Agriculture Organization of the United Nations (FAO) have created a water-cycle diagram for use in elementary and middle schools. The diagram is available in many languages. This diagram is part of the USGS's Water Science School, in which the water cycle is described in detail.Neno, Stephanie; Morgan, Jim; Zonolli, Gabriele; Perlman, Howard; Gonthier, Gerard
Water science for schoolsPerlman, Howard A.
Estimated use of water in the United States in 1995
The purpose of this report is to present consistent and current water-use estimates by state and water-resources region for the United States, Puerto Rico, the U.S. Virgin Islands, and the District of Columbia. Estimates of water withdrawn from surface- and ground-water sources, estimates of consumptive use, and estimates of instream use and...Solley, Wayne B.; Pierce, Robert R.; Perlman, Howard A.
World Wide Web access to publications and data for the Apalachicola-Chattahoochee-Flint River Basin, Georgia, Florida, and Alabama, 1992-95Garrett, Jerry W.; Perlman, Howard A.; Scholz, Judith
Estimated use of water in the United States in 1990
Water withdrawals in the United States during 1990 were estimated to average 408,000 million gallons per day (Mgal/d) of freshwater and saline water for offstream uses--2 percent more than the 1985 estimate. Total freshwater withdrawals were an estimated 339,000 Mgal/d during 1990, about the same as during 1985. Average per-capita use for all...Solley, Wayne B.; Pierce, Robert R.; Perlman, Howard A.
Sediment data for Georgia streams, water years 1958-82
Sediment data have been collected regularly in Georgia by the U.S. Geological Survey since 1957. The data were collected in cooperation with a number of State and Federal agencies. The frequency of data collection varied and several sampling methodologies were used. This report presents suspended-sediment-concentration data for 179 sites,...Perlman, Howard
El Ciclo de Agua Para Niños
El Servicio Geológico de los Estados Unidos (USGS por sus siglas en inglés) y la Organización de Alimento y Agricultura de las Naciones Unidas (FAO) han colaborado en la creación de un diagrama sobre el ciclo del agua para niños de las escuelas elementales e intermedias....
Learn About Water!
The U.S. Geological Survey (USGS) and the Food and Agriculture Organization of the United Nations (FAO) have teamed up to create a water-cycle diagram for schools and kids. It is available in over 30 languages and also in an interactive version made for online...