High groundwater definition

High groundwater means zones of soil saturation which include perched water tables, shallow regional groundwa- ter tables or aquifers, or zones that are seasonally, periodically or permanently saturated.
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High groundwater means seasonally or periodically elevated levels of groundwater.
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High groundwater means a groundwater that elevation does not meet minimum distance from the bottom of a proposed practice as defined in the Stormwater Standards Manual.
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Examples of High groundwater in a sentence

  • High groundwater elevation shall be estimated by the inspector, using best professional judgment, based on the methods described in 310 CMR 15.302(4)(a) through (c).

  • High groundwater is deemed to be an area where the groundwater is less than 4-feet below natural ground level.

  • High groundwater levels do not persist and tend to drop fairly quickly after a rainfall event.

  • High groundwater levels may also inundate sewer and storm water drainage networks, exceed capacity and lead to flooding in locations, which would otherwise be unaffected.

  • High groundwater table conditions existing in level sites within soils which are saturated for periods of time are considered as being incapable of effective draining by these methods.

  • High groundwater levels are usually the key source of groundwater flooding, which occurs when excess water emerges at the grounds surface (or within manmade underground structures such as basements).

  • High groundwater levels shallower than the threshold (between 30 and 50 feet below ground surface) may at some locations increase the potential for liquefaction during very strong earthquakes.

  • High groundwater and flooding concerns limited options for off-channel storage projects like managed aquifer storage projects.

  • High groundwater salinity was found during the hydrology investigation in March 2014, despite high rainfall during the previous month.

  • High groundwater levels have also saturated soil and sub-soil in parts of northern Phelps and Kearney counties, requiring TBNRD to construct drainage ditches (Improvement Project Areas or IPAs) in an attempt to stabilize groundwater levels below the crop root zone.


More Definitions of High groundwater

High groundwater means seasonally or periodically elevated levels of groundwater, particularly when such groundwater may significantly interfere with the effective treatment or operation of a soil adsorption system.
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High groundwater means the vertical distance from the natural ground surface to the upper surface of groundwater as observed as a free water surface in an unlined hole during the time of year when the groundwater is the highest.
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High groundwater means zones of soil saturation which include: Perched water tables, shallow regional groundwater tables or aquifers, or zones that are seasonally, periodically or permanently saturated. Unless otherwise proven, the presence of soil mottles indicates the level of seasonal saturation.
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High groundwater means the elevation that water is found at or where there is evidence of long-term saturation in the soil material when performing a site evaluation. High groundwater may be determined by the presence of redoximorphic features, otherwise known as mottling.
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Related to High groundwater

  • Groundwater means all water, which is below the surface of the ground in the saturation zone and in direct contact with the ground or subsoil.

  • Soil means all unconsolidated mineral and organic material of any origin.

  • Navigable waters ’ means the waters of the United States, including the territorial sea;

  • Sediment means solid material, mineral or organic, that is in suspension, is being transported, or has been moved from its site of origin by air, water or gravity as a product of erosion.

  • Contaminated soil means soil that meets all of the following criteria:

  • Surface water means all water which is open to the atmosphere and subject to surface runoff.

  • Wetlands means those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas.

  • Underground storage means storage of gas in a subsurface stratum or formation of the earth.

  • Wildlife means all species of the animal kingdom whose

  • Aquifer means a geologic formation, group of formations, or part of a formation capable of yielding a significant amount of groundwater to wells or springs.

  • Stormwater management planning area means the geographic area for which a stormwater management planning agency is authorized to prepare stormwater management plans, or a specific portion of that area identified in a stormwater management plan prepared by that agency.

  • Wetland or "wetlands" means areas that are inundated or saturated by surface water or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas. Wetlands do not include those artificial wetlands intentionally created from nonwetland sites, including, but not limited to, irrigation and drainage ditches, grass-lined swales, canals, detention facilities, wastewater treatment facilities, farm ponds, and landscape amenities, or those wetlands created after July 1, 1990, that were unintentionally created as a result of the construction of a road, street, or highway. Wetlands may include those artificial wetlands intentionally created from nonwetland areas created to mitigate conversion of wetlands.

  • Underground storage tank or “UST” means any one or combination of tanks (including underground pipes connected thereto) that is used to contain an accumulation of regulated substances, and the volume of which (including the volume of underground pipes connected thereto) is 10 percent or more beneath the surface of the ground. This term does not include any: