Glossary

The erosion control world is filled with a variety of different terms and phrases that may mean one thing to a seasoned veteran but make no sense whatsoever to someone who is just starting out. ErosionControlNetwork.com has comprised a database of many of these phrases and their definitions to help you gain a better understanding of erosion control terminology. How To Use: Click a letter below to see phrases starting with that letter, or enter your word into the text box below and click the Search button. Search by Alphabet A B C D E F G H I J K L M N O P Q R S T U V W X Y Z or Search by Keyword All Search Results are Displayed Below Can't Find A Term? If there are any terms or phrases that are not in our database that you think should be, please click on the button below. We will process your request as soon as possible.

Glossary Results ------------------------------------------------------------------------------------------------------------- Gabion Baskets (usually made of wire) filled with rock or broken pieces of concrete, used for building erosion control structures General Permit An NPDES permit issued under 40 CFR 122.28 that authorizes a category of discharges under the CWA within a geographical area. A general permit is not specifically tailored for an individual discharger. Geographic information system (GIS) System that links spatial information such as satellite images and maps with alphanumeric information to produce a georgraphically referenced database Geomembrane An impervious thin sheet of rubber or plastic material that functions as a barrier for liquid or vapor Geosynthetic A product manufactured from polymeric material used with soil, rock, earth, or other geotechnical engineering material as an integral part of a man-made project, structure, or system Geosynthetic Institute (GSI) Geosynthetic Institute Geotextile Textile made from synthetic fibers, usually nonbiodegradable. Geotextiles can be woven or nonwoven and have varying degrees of porosity. They are used as moisture barriers, for separation or reinforcement of soils, for filtration, and for drainage. GIS Geographic information system Global positioning system (GPS) Network of satellites that emit continuous location-finding radio signals; GPS receivers use the signals from multiple satellites to determine their exact three- dimensional coordinates (latitude, longitude, and height) Glume One of the pair of outer bracts at the base of a spikelet. 1 2