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A crystalline rock formed by the cooling and solidification of molten or partly molten material (magma). Igneous rock includes volcanic rock (rock solidified above the Earth's surface) and plutonic rock (rock solidified at considerable depth).
- Browse Related Terms: Diorite, Granite, Granodiorites, Igneous rock, Intrusive, Latite, Lava flow, Mafic (or maphic), Pluton, Plutonic
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The effect, influence, alteration, or imprint caused by an action.
- Browse Related Terms: Historic resources, Horizon line, Impact, Land disturbance, Scenic quality, Scenic resources, Scenic value, Skylining, Visual feature, Visual harmony
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Refers to a rock matrix that water cannot infiltrate.
- Browse Related Terms: Aquifer, Basement complex, Basement rock, Breccia, Chert, Conglomerate, Hydrostratigraphic, Impermeable, Induration, Laccolith, Metamorphic rock, Quartzite, Schist, Shale (outcrop), Siltstone, Strata, Volcanoclastic rock
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The entrapment of aquatic organisms on the outer part of an intake structure or against a screening device during periods of intake water withdrawal.
- Browse Related Terms: Aftershocks, discharge, Early Archaic, extremely low frequency (ELF), Historic, Impingement, Late Archaic, Prehistoric, savanna, Sedentism, Seismic swarm, Swarm (seismic swarm), Thorn forest, Wind rose
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Input-output economic model based on economic accounts showing the flow of commodities to industries from producers and institutional consumers. The accounts also show consumption activities by workers, owners of capital, and imports from outside the region.
- Browse Related Terms: aggregate, Blowdown waste, Blowdown water, Composite noise level, Dish engine system, Dish engine technologies, IMPLAN
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A body of water or sludge confined by a dam, dike, floodgate, or other barrier.
- Browse Related Terms: 100-year floodplain, Aquifer-unconfined, Artesian water (artesian pressure), Confined aquifer, Hydraulic gradient, Impoundment (surface), Rebound (of water levels), Recharge, Sole source aquifer, Transmissivity, Unconfined aquifer
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Noise from impacts or explosions (e.g., from a pile driver, forging hammer, punch press, or gunshot), which is brief and abrupt, and its startling effects cause great annoyance.
- Browse Related Terms: Acute, Adverse environmental impacts, Best Management Practice (BMP), Compensatory mitigation, Contrast level, Design features, Direct impacts, Hedonic statistical framework, Impulsive noise, Just-in-time ordering, Key observation point(s) (KOP), Mitigation, Mitigation measures, PFYC, Region of Influence (ROI), Richter Magnitude Scale, View duration, Visual mitigation
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In compliance with air-quality standards. Areas that are in attainment have air quality that is as good as or better than specified in the National Ambient Air Quality Standards for a given pollutant. An area may be in attainment for one pollutant and nonattaining for others.
- Browse Related Terms: Air Quality Control Region (AQCR), Attainment, Class I area, Class II area, Clean Air Act (CAA), Criteria air pollutants, Exceedance, In attainment, NAAQS, Nonattainment area, Permit, Prevention of Significant Deterioration (PSD) Program, PSD increments
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In its natural position or place; unmoved, unexcavated, remaining at the site or subsurface.
- Browse Related Terms: Anthropomorphic, Biomass, Disposal, Duripan, Fossil Fuels, Geothermal generating plant, Geothermal resources, In situ, Industrial waste, Solid waste
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People moving into an area.
- Browse Related Terms: Ambient Air, Boreal, Chaparral, Demographic, Desert scrub, Ethnobotany (ethnobotanical), Grasslands, Habitat type, In-migration, Rangeland, Socioeconomics
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A permit issued under Section 10 of the Federal Endangered Species Act to private parties undertaking otherwise lawful projects that might result in the take of an endangered or threatened species. Application for an incidental take permit is subject to certain requirements, including preparation by the permit applicant of a conservation plan, generally known as a Habitat Conservation Plan or HCP.
- Browse Related Terms: Appropriation Doctrine, Augmentation Plan, Beneficial use of water, Domestic water use, Entry, Fast-track, Incidental take permit, Irrigation, Reclamation withdrawal, Regular-track proposals, Reserved Water Right, Safe Drinking Water Act (SWDA)
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Lands, natural resources, or other assets held in trust or restricted against alienation by the United States for Native American tribes or individual Native Americans.
- Browse Related Terms: All-American Roads, Cultural disturbance, Cultural resources, Diagnostic, Indian trust assets, Minority population, National Register of Historic Places (NRHP), National Scenic Byway, Native American, Native American Graves Protection and Repatriation Act (NAGPRA), Sacred landscapes, Traditional cultural property, Tribe, Voluntary relinquishment
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Those natural resources, either on or off Indian lands, retained by or reserved by or for Indian tribes through treaties, statutes, judicial decisions, and E.O.s, which are protected by a fiduciary obligation on the part of the United States.
- Browse Related Terms: Clovis Complex, Designated Roads and Trails, GDAs, Indian trust resources, Interpretive site, Known Geothermal Area (KGA), Lease, Off-road vehicle (OHV) designations, Pueblo, Quad-level occurrence, Sacred site, Social disruption, USGS, Water code
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Secondary effects that occur in locations other than that of the initial action or significantly later in time.
- Browse Related Terms: Abiotic, Anthropogenic emissions, Demand-side management, Direct effects, Ecosystem, Effects, Full-time equivalent (FTE), Indirect effects, NatureServe, Noise criteria, Reclamation, Stressors
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Impacts that occur away from the place of origin. Effects that are related to, but removed from, a proposed action by an intermediate step or process. An example would be changes in surface-water quality resulting from soil erosion at construction sites.
- Browse Related Terms: Blowdown, Clearing and grubbing, Differential compaction, Evaporation Rate, Evapotranspiration, Fire emissions, Ground failure, Indirect impacts, Structural fires, Turbidity, Wildfire
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The hardening of a rock, usually sedimentary, by drying, pressure, or cementation.
- Browse Related Terms: Aquifer, Basement complex, Basement rock, Breccia, Chert, Conglomerate, Hydrostratigraphic, Impermeable, Induration, Laccolith, Metamorphic rock, Quartzite, Schist, Shale (outcrop), Siltstone, Strata, Volcanoclastic rock
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Materials discarded from industrial operations or derived from manufacturing processes.
- Browse Related Terms: Anthropomorphic, Biomass, Disposal, Duripan, Fossil Fuels, Geothermal generating plant, Geothermal resources, In situ, Industrial waste, Solid waste
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The movement of water (usually precipitation) from the ground surface into the subsurface.
- Browse Related Terms: Erosion, Groundwater recharge, Infiltration, Plume downwash, Rill, Sand boil, Seeps, Soil compaction, Subsidence
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A shallow impoundment designed to infiltrate stormwater into the soil. Also referred to as an infiltration basin.
- Browse Related Terms: Basin-fill aquifer, Bolson (floor), Closed Basin, compact, Depletion, Earthern cattle tank, Groundwater basin, Gypsum, Infiltration pond, Interbasin flow, Interbasin transfer of water, Interbasin transfers, Overdraft, Perennial yield (groundwater), reservoir, Safe yield, Sustainable yield
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Water that flows into a surface water or groundwater body. The amount of water entering a reservoir expressed as a volume per time.
- Browse Related Terms: Augmentation water, Benthic, Channel incision, drawdown, Floodplain, Groundwater overdraft, hydrology, Inflow, Junior water rights, Kiva, Outflow, Perennial/safe/sustainable yield, Phosphorous, Point of diversion, Pueblo rights, Thermal water, Water right
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