Hydrology

12-month time period used in hydrology

transfer of water from one river basin to another

body of water used as a reservoir for a water-powered mill

Hydrological relationship

Phreatic is a term used in hydrology to refer to aquifers, in speleology to refer to cave passages, and in volcanology to refer to a type of volcanic eruption.

perimeter of a cross sectional area that is wet

work to improve the environmental health of a river or stream

economic activity

drainage of agricultural lands by wells

comparatively straight part of a river or channel between two bends

Type of graph

landform in a river

thumb|right|240px|Astyanax jordani, a [[cavefish from Mexican caves]]

non-linear partial differential equation that represents the movement of water in unsaturated soils

study of water balance components intervening in agricultural water management, especially in irrigation and drainage

life process in plants

erosion of sediment near bridge foundations by water

method of tracking fluid flow

type of radial arm floodgate

part of the porosity in which a given fluid can flow

pipeline or tunnel that discharges municipal or industrial wastewater, stormwater, combined sewer overflows, cooling water, or brine effluents from water desalination plants to the sea

Macrobenthos consists of the organisms that live at the bottom of a water column and are visible to the naked eye. In some classification schemes, these organisms are larger than 1 mm; in another, the smallest dimension must be at least 0.5 mm. They include polychaete worms, pelecypods, anthozoans, echinoderms, sponges, ascidians, crustaceans.

mechanical collection of water from fog

instrument

overview about the hydrology of Switzerland

thin layer of water surrounding mineral surfaces

mathematical model

alteration of a surrounding environment by the presence of a water source

Estimate of the soil moisture deficit

spring produced by the emergence of geothermally heated groundwater in Taiwan

Number quantifying branching in rivers

Largely undeveloped or wild land, usually forested, surrounding a river or stream

formerly natural waterway flowing through heavily populated area

shoreline where the land descends gradually into the sea

watering strategy

Sediment in water

measurement technique

Analysis of capillary action

the amount of water that a portion of an aquifer releases from storage, per unit mass or volume of aquifer, per unit change in hydraulic head

A Lugeon is a unit devised to quantify the water permeability of bedrock and the hydraulic conductivity resulting from fractures; it is named after Maurice Lugeon, a Swiss geologist who first formulated the method in 1933. More specifically, the Lugeon test is used to measure the amount of water injected into a segment of the bored hole under a steady pressure; the value (Lugeon value) is defined as the loss of water in litres per minute and per metre borehole at an over-pressure of 1 MPa.

form of engineered sump or percolation pond

region surrounding a well due to groundwater extraction

parameter (and formula) to describe stability of grains in flowing water

water measurement

ability to absorb pollution

field of geochemistry and hydrology

In soil, macropores are defined as cavities that are larger than 75 μm. Functionally, pores of this size host preferential soil solution flow and rapid transport of solutes and colloids. Macropores increase the hydraulic conductivity of soil, allowing water to infiltrate and drain quickly, and shallow groundwater to move relatively rapidly via lateral flow. In soil, macropores are created by plant roots, soil cracks, soil fauna, and by aggregation of soil particles into peds. Macropores can also be found in soil between larger individual mineral particles such as sand or gravel.