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 ------------------------------------------------------------------------------------------------------------- Hazardous Substance Any substance, other than oil, which, when discharged in any quantities into waters of the U.S., presents an imminent and substantial danger to the public health or welfare, including but not limited to fish, shellfish, wildlife, shorelines and beaches (Section 311 of the CWA); identified by EPA as the pollutants listed under 40 CFR Part 116. Any substance, other than oil, which, when discharged in any quantities into waters of the U.S., presents an imminent and substantial danger to the public health or welfare, including but not limited to fish, shellfish, wildlife, shorelines and beaches (Section 311 of the CWA); identified by EPA as the pollutants listed under 40 CFR Part 116. Headcut The point at the upstream end of a channel where it grows and lengthens; also called nick point Headcutting The action of an upstream moving waterfall or locally steep channel bottom with rapidly flowing water through an otherwise placid stream. These conditions often indicate that a readjustment of a streamâs discharge and sediment load characteristics is taking place. Highway Engineering Circular #15 (HEC 15) Highway Engineering Circular #15 Hybrid The progeny resulting from a cross of individuals that differ in one or more heritable characters. Hybrid terrace A method of planting on slopes to prevent soil loss and landslides; mulches, trees, vetiver grass, and rock walls are combined on the terraces to tie soils onto the hillsides and provide gradient breaks where sediments can be deposited and nutrients retained Hydraulic mulching Applying wood fiber mulch and often a mixture of seed, water, and fertilizer in one application help retain soil and moisture; also hydromulching Hydroseeding A method of seeding by mixing seed with water and fertilizer and then spraying the solution onto a seedbed 1