Section 10561 Of Part 2.3. Stormwater Resource Planning From California Water Code >> Division 6. >> Part 2.3.
10561
. The Legislature hereby finds and declares all of the
following:
(a) In many parts of the state stormwater and dry weather runoff
are underutilized sources of surface water and groundwater supplies.
Instead of being viewed as a resource, they are often seen as a
problem that must be moved to the ocean as quickly as possible or as
a source of contamination, contributing to a loss of usable water
supplies and the pollution and impairment of rivers, lakes, streams,
and coastal waters.
(b) Improved management of stormwater and dry weather runoff,
including capture, treatment, and reuse by using the natural
functions of soils and plants, can improve water quality, reduce
localized flooding, and increase water supplies for beneficial uses
and the environment.
(c) Most of California's current stormwater drainage systems are
designed to capture and convey water away from people and property
rather than capturing that water for beneficial uses.
(d) Historical patterns of precipitation are predicted to change
and an increasing amount of California's water is predicted to fall
not as snow in the mountains, but as rain in other areas of the
state. This will likely have a profound and transforming effect on
California's hydrologic cycle and much of that water will no longer
be captured by California's reservoirs, many of which are located to
capture snow melt.
(e) When properly designed and managed, the capture and use of
stormwater and dry weather runoff can contribute significantly to
local water supplies through onsite storage and use, or letting it
infiltrate into the ground to recharge groundwater, either onsite or
at regional facilities, thereby increasing available supplies of
drinking water.
(f) New developments and redevelopments should be designed to be
consistent with low-impact development principles to improve the
retention, use, and infiltration of stormwater and dry weather runoff
onsite or at regional facilities.
(g) Stormwater and dry weather runoff can be managed to achieve
environmental and societal benefits such as wetland creation and
restoration, riverside habitats, instream flows, and an increase in
park and recreation lands, and urban green space.
(h) Stormwater and dry weather runoff management through
multiobjective projects can achieve additional benefits, including
augmenting recreation opportunities for communities, increased tree
canopy, reduced urban heat island effect, and improved air quality.
(i) Proper planning and implementation is vital to ensure that the
water supply and other benefits potentially available through better
management of stormwater and dry weather runoff do not come at the
expense of diminished water quality.
(j) The capture and use of stormwater and dry weather runoff is
not only one of the most cost-effective sources of new water
supplies, it is a supply that can often be provided using
significantly less energy than other sources of new water supplies.