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==W== | ==W== | ||
− | + | <dl> | |
− | + | <dt>Walker Method </dt><dd> a method for determining sizing for water detention ponds, developed in the upper Midwest to maximize phosphorus removal to protect sensitive lakes from eutrophication.</dd> | |
− | + | <dt>Wasteload Allocation (WLA) </dt><dd> is the portion of a receiving water's assimilative capacity that is allocated to one of its existing or future point sources of pollution.</dd> | |
− | + | <dt>water balance </dt><dd> A hydrological formula used by scientists and land managers to determine water surpluses and deficits in a given area. Includes inputs such as precipitation; outputs such as evapotranspiration, infiltration, and runoff; and storage within the system.</dd> | |
− | + | <dt>water holding capacity </dt><dd> the amount of water that can be held in a soil between saturation and a specific pressure. Field capacity (1/3 bar pressure) and wilting point (15 bar pressure) are commonly used to define a soil's water holding capacity.</dd> | |
− | + | <dt>[https://stormwater.pca.state.mn.us/index.php/Unified_sizing_criteria_section water quality sizing] </dt><dd> tied to the volume of stormwater runoff.</dd> | |
− | + | <dt>[https://stormwater.pca.state.mn.us/index.php/Unified_sizing_criteria_section water quality volume] </dt><dd> The volume of water that is treated by a BMP. To meet the requirements of the Construction Stormwater General Permit, the Water Quality Volume means one (1) inch of runoff from the new impervious surfaces created by the project (calculated as an instantaneous volume) and is the volume of water to be treated in the Permanent Stormwater Management System, as required by the permit.</dd> | |
− | + | <dt>watershed </dt><dd> a topographically defined area within which all water drains to a particular point.</dd> | |
− | + | <dt>watershed inch </dt><dd> a unit of measure corresponding to the volume of water spread out over the entire watershed area at a depth of one inch.</dd> | |
− | + | <dt>waters of the State </dt><dd> All streams, lakes, ponds, marshes, watercourses, waterways, wells, springs, aquifers, irrigation systems, drainage systems, and all other bodies or accumulations of water surface or underground, natural or artificial, public or private, which are contained within, flow through or under the state or any portion thereof.</dd> | |
− | + | <dt>waters of the United States </dt><dd> those waters coming under federal jurisdiction.</dd> | |
− | + | <dt>weir </dt><dd> a spillover dam–like device used to measure or control water flow.</dd> | |
− | + | <dt> Wellhead Protection Area (WHPA) </dt><dd> the surface and subsurface area surrounding a well or well field that supplies a public water system, through which contaminants are likely to move toward and reach the well or well field ([https://www.revisor.mn.gov/statutes/?id=103I.005 Minnesota Statutes, section 103I.005], subdivision 24).</dd> | |
− | + | <dt>wetland </dt><dd> land that is transitional between aquatic and terrestrial ecosystems and must: have a predominance of hydric soils, be inundated or saturated by surface water or ground water at a frequency and duration sufficient to support a prevalence of hydrophytic vegetation typically adapted for life in saturated soil conditions, and under normal circumstances support a prevalence of hydrophytic vegetation. To be a wetland the area must meet wetland criteria for soils, vegetation, and hydrology as outlined in the 1987 U.S. Army Corps of Engineers Wetland Delineation Manual.</dd> | |
− | + | <dt>wetland systems </dt><dd> hydrologically interconnected series of wetlands which includes the interrelatedness of habitat, wetland functions, and biology.</dd> | |
− | + | <dt>wet pond </dt><dd> a permanent pool of water for treating incoming stormwater runoff.</dd> | |
− | + | <dt>wet vault </dt><dd> A wet vault is a vault stormwater management device with a permanent water pool, generally 3 to 5 feet deep.</dd> | |
+ | <dt>wilting point </dt><dd> permanent wilting point or wilting point is the minimal point of soil water the plant requires not to wilt. This is often taken to be the water content at 15 bars pressure.</dd> | ||
+ | </dl> | ||
==XYZ== | ==XYZ== |
Absorption
a physical or chemical phenomenon or a process in which atoms, molecules or ions enter some bulk phase – gas, liquid or solid material.
Access and egress control
reinforced or rocked entrance and exit points to the site to deter tracking of sediment off the site onto adjacent streets
Active karst
a terrain having distinctive landforms and hydrology created primarily from the dissolution of soluble rocks within 50 feet of the land surface [Minn. R. 7090]
Adsorption
the adhesion of an extremely thin layer of molecules to the surfaces of solid bodies or liquids with which they are in contact
Aggrade
the build up of sediment or eroded material
Anaerobic
condition operating in a system where there is the absence of free oxygen available for biologic use.
Animal waste management
practices and procedures which prevent the movement of animal wastes or byproducts from feeding or holding areas into the wider environment.
Annual load
quantity of pollutants, sediment, or nutrients carried by a water body over the period of a year
Antecedent soil moisture
the water content held by a soil before a storm event. This has an effect on the amount of water that will runoff due to that event.
Applicable Wasteload Allocation (WLA)
a Wasteload Allocation assigned to the permittee and approved by the USEPA
Aquifer
a body of permeable rock that can contain or transmit groundwater.
Atmospheric controls
reducing or removing wind erosion, dust, or statutory emissions regulations
Baffle weir
Bankfull
Bank stabilization
Base flow
Basin
Bed load
Best Management Practice (BMP)
Better Assessment Science Integrating Point and Nonpoint Sources (BASINS)
Better site design (BSD)
Biofiltration
Bioinfiltration
Biological additives
Biological oxygen demand(BOD)
Bog
Bounce
Brownfield
Buffers