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 ------------------------------------------------------------------------------------------------------------- Wale Structural element of a bulkhead, fixed horizontally between the vertical piles on the seaward side and the sheet piles on the landward side Warm season turfgrass Species of turfgrass such as bermudagrass, St. Augustine, zoysia, and buffalograss used in the southern US Warm-season turfgrass Turfgrass species best adapted to growth during the warmer part of the year; usually dormant during cold weather or injured by it; commonly having temperature optimum of 27 to 35 degrees C (80 to 95 degrees F); e.g., bahiagrass, bermudagrass, St. Augustin Warp (1) The yarn running the length of the fabric in the machine direction. (2) The sheet of yarns wound together or a beam for the purpose of weaving or knitting. (3) Often referred to as the "machine direction.” Wasteload Allocation (WLA) The proportion of a receiving water's total maximum daily load that is allocated to one of its existing or future point sources of pollution. Water erosion Removal of soil particles by water; the three types are sheet erosion, rill erosion, and gully erosion Water Quality Criteria Comprised of numeric and narrative criteria. Numeric criteria are scientifically derived ambient concentrations developed by EPA or states for various pollutants of concern to protect human health and aquatic life. Narrative criteria are statements that describe the desired water quality goal. Water Quality Standard (WQS) A law or regulation that consists of the beneficial use or uses of a waterbody, the numeric and narrative water quality criteria that are necessary to protect the use or uses of that particular waterbody, and an antidegradation statement. Water Quality-Based Effluent Limit (WQBEL) A value determined by selecting the most stringent of the effluent limits calculated using all applicable water quality criteria (e.g., aquatic life, human health, and wildlife) for a specific point source to a specific receiving water for a given pollutant. Waters of the United States All waters that are currently used, were used in the past, or may be susceptible to use in interstate or foreign commerce, including all waters subject to the ebb and flow of the tide. Waters of the United States include all interstate waters and intrastate lakes, rivers, streams (including intermittent streams), mudflats, sand flats, wetlands, sloughs, prairie potholes, wet meadows, playa lakes, or natural ponds. [See 40 CFR 122.2 for the complete definition.] 1 2 3