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<br />actually salvages and appropriates waters that would otherwise
<br />go to waste is entitled to the use of such waters. Salvaged water
<br />is already in the area and is saved and restored to the usable
<br />supply within the area by artificial means. (Hutchins, The
<br />California Law of Water Rights, p. 383-385, 1956.)
<br />
<br />SEEPAGE - The slow movement (oozing) of water into Or out
<br />of the ground through either saturated or unsaturated materials.
<br />Mo\'emem of water to the water table is called influent seepage,
<br />while discharge of water away from the water table is called
<br />eFnuent seepage. Seepage through unsaturated material is con-
<br />trolled by the laws of soil moisture movement while seepage
<br />through. saturated material moves according 10 the laws of
<br />percolatIon.
<br />
<br />SOIL MOISTURE. Pellicular water in the soil zone. It is
<br />divided into available and unavailable moisture, the fonner being
<br />water easily abstracted by rools of plants, while the latter is
<br />water held SO firmly by adhesion and other forces th:it it cannot
<br />usually be absorbed by plants rapidly enough to produce growth.
<br />(ASCE Glossary, p, 145, 1949,)
<br />
<br />STREAM, EFFLUENT - A stream or stretch of stream which
<br />receives water from ground water in the zone of saturation. The
<br />water surface of such a stream stands at a lower level than the
<br />water table or piezometric surface of the ground-water body
<br />from which it receives its water. (ASCE Glossary, p. 219, 1949.)
<br />
<br />TRANSPIRATION. Transpiralion is the process by which
<br />water vapor is lost 10 the atmosphere from Jiving plants. (Robin-
<br />son, T.W., Encyclopedia of BioI. Sci., 1961.)
<br />
<br />COMMON CONVERSION FACTORS
<br />
<br />VOLUME
<br />
<br />I Acre Foot = 43,560 Cubic Feet
<br />1 Acre Foot = 325,851 Gallons
<br />1 Acre Inch = 3,630 Cubic Feet
<br />I Million Gallons = 3.07 Acre Feet
<br />1 Cubic Foot = 7.48 Gallons
<br />1 Million Gallons = 133,681 Cubic Feet
<br />
<br />FLOW RATE
<br />
<br />50 Miner's Inches = I Cubic Foot Per Second in ldaho, Kan-
<br />sas, Nebraska, New Mexico, North Dakota, Northern Califor-
<br />nia, Washington and Utah.
<br />40 Miner's Inches == 1 Cubic Foot Per Second in Arizona,
<br />Southern California, Montana and Oregon.
<br />38.4 Miner's Inches;::::: I Cubic Foot Per Second in Colorado.
<br />1 Cubic Foot Per Second == 449 Gallons Per Minule
<br />I Cubic Foot Per Second = 646,317 Gallons Per Day
<br />1 Cubic Foot Per Second = I Acre Inch Per Hour (Approxi-
<br />mately)
<br />I Cubic Foot Per Second == 0.99 Acre-Inches Per Hour
<br />I Cubic Foot Per Second = 1.98 Acre-Feet Per Day
<br />1 Million Gallons Per Day = 1.55 Cubic Feet Per Second
<br />] Cubic Foot Per Second = 724 Acre-Feet Per Year
<br />
<br />WEIGHT
<br />
<br />Gallon of. Water = 8.33 Pounds
<br />Cubic Foot of Water = 62.4 Pounds
<br />
<br />14
<br />
<br />SOUTHEASTERN COLORADO WATER
<br />CONSERVANCY DISTRICT
<br />
<br />SUPPLEMENT TO BROCHURE NO, 4
<br />ADDITIONAL WATER RESOURCES TERMS
<br />
<br />ACTIVE STORAGE CAPACITY - The toral amount of reser-
<br />voir cap<:lcity <:lv<:lildble for seasonal or cyclic water storage.
<br />
<br />AFTERBAY RESERVOIR - A reservoir downstream from d.
<br />main reser\'OIr and u~ed for reregulation of peak nows from a
<br />hydroelectIic power plant, although it may serve other purposes
<br />such 3S recreation.
<br />
<br />APPLIED WATER (IRRIGATION) - W"" made available
<br />for crop use. It does not include direct precipitation nor convey-
<br />ence losses before reaching the edge of the field.
<br />
<br />APPLIED WATER REQUIREMENT - The amount of w"er
<br />requ.ired to be deli.\"ered to a farmer's head gate for a crop in a
<br />given period of time. It does nOt include direct precipitation.
<br />
<br />ARABLE LANDS Lands capable of being cultivated and
<br />suitable for the production of crops. Land which, in adequate
<br />units and when properly provided with the essential improve-
<br />ments of leveling, drainage, buildings, irrigarion facilities and
<br />the like, will have a productive capacity, under sustained irri-
<br />gation agriculture, sufficient to: meet all producrion expenses,
<br />including a reasonable retUrn on investment; repay reasonable
<br />irrigation and impco\'emem costs; and provide a satisfactory
<br />level of living for the farm family.
<br />ARTESIAN AQUIFER - An aquifer in which [he water is
<br />under sufficiem pressure to cause it to rise above the bottom
<br />of the confinmg bed if opportunity to do so were provided.
<br />
<br />ARTIFICIAL RECHARGE - The addition of water to the
<br />ground water resen'oir by activities of man, such as irrigation or
<br />induced inhltr<ltion from streams, wells, or. spreading basins.
<br />BASE FLOW - That portion of runoff not resulting from di-
<br />rect runoff of precipitation. It may come from ground water
<br />effluent, or delayed runoff horn storage in lakes, swamps, gla-
<br />ciers, snow, etc.
<br />
<br />BASIN ACOllNT - A development fund authoriz.ed by the
<br />Congress to be managed and operated by the Secretary of Interior
<br />for the development, operation, and maintenance of water re-
<br />sourceS in a specified river basin region or project.
<br />BENEFIT-COST RATIO - The arithmetic proportion of esti.
<br />mated a\'erage annual benefits {Q average annual COStS, in so far
<br />as the factors can be expressed in monetary terms, it is a measure
<br />of the degree of tangible economic justification of a project.
<br />BRACKISH \VATER - \-Vater containing dissolved minerals in
<br />excess of that passing drinking water standards, but less than
<br />in sea water.
<br />
<br />CLOSED BASIN - A basin is considered closed with respect
<br />to surface flow if its topographv prevents the occurrence of visi-
<br />ble outflow. It is closed hydrologically if neither surface nor
<br />underground outflow can OC.CUe.
<br />CONJUNCTIVE USE (GROUNDWATER) - The integrared
<br />use of surface and subsurface water supplies, normally involving
<br />storage of !>urplus waters dming \'\'ct periods for \l~C during dry
<br />periods.
<br />
<br />
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