196 Chapter 10: Appendix
Water use information for various crops can be obtained from various USDA
publications.
The purpose is to allow the water user to estimate the amount of available water
remaining in the root zone at any time, thereby indicating when the next irriga-
tion should be scheduled and the amount of water needed. Methods to measure
or estimate the soil moisture should be employed, especially for high-value crops
or where the water-holding capacity of the soil is low.
Spring Development (574): Improvin springs and seeps by excavating, clean-
ing, capping, or providing collection and storage facilities.
There will be negligible long-term water quality impacts with spring develop-
ments. Erosion and sedimentation may occurfrom any disturbed areas during
and immediately after construction, but should be short-lived. These sediments
will have minor amounts of adsorbed nutrients from soil organic matte):
Stream Channel Stabilization (584): [ADD DEFINITION]
Stream Corridor Improvement (204): [ADD DEFINITION]
Stream crossing (interim): A stabilized area to provide access across a stream
for livestock and farm machinery.
The purpose is to provide a controlled crossing or watering access point for
livestock along with access for farm equipment, control bank and streambed
erosion, reduce sediment and enhance water quality, and maintain or improve
wildlife habitat.
Streambank and Shoreline Protection (580): Using vegetation or structures to
stabilize and protect banks and streams. lakes. estuaries, or excavated channels
against scour and erosion.
Stripcropping, Contour (585): Growing crops a systematic arrangement of
strips or bands on the contour to reduce water erosion. The crops are arranged so
that a strip of grass or
growing crop is alternated with a strip of clean-tilled crop or fallow or a strip of
grass is alternated with a close-growing crop.
other water management systems that conveys water, controls the direction or
rate of flow, or maintains a desired water surface elevation.
Subsurface Drain (606): A conduit, such as corrugated plastic tile, or pipe, in-
stalled beneath the ground surface to collect and/or convey drainage water.
Soil water outlet to
water courses by this practice may be low concen-
trations of sediment and sediment-adsorbed substances and that
improve
water
Sometimes the
soil water is high in the concentra-
tion of nitrates and other dissolved
and drinking
standards
be exceeded. If
that is high dissolved substances is able to
recharge ground
the aquifer quality may become impaired. Stream water
temperatures may be
drainage discharge. Aquatic habitat
be altered or enhanced with the increased cooler water temperatures.
Chapter 1 O-l 96:
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