KLAMATH
TMDL
by Siskiyou County Supervisor Marcia Armstrong 3/6/09
Last week at a public meeting held at Willow Creek School, the
North Coast Regional Water Quality Control Board (NCRWQCB)
“scoped” implementation ideas for the Klamath River Total Maximum
Daily Loads (TMDLs.)
http://www.waterboards.ca.gov/northcoast/ Public comments are
due by March 27.
Under the Clean Water Act (CWA) and CA Porter Cologne Water
Quality Act, the many “beneficial uses” for rivers in California
are determined. For example, among these uses are “cold water
fisheries” (salmon and steelhead,) recreation, and hydropower.
“Pollutants” are considered to be factors that do not “support”
the particular beneficial uses of a river. For example high water
temperature does not support cold water fisheries.
The Klamath River is listed on the federal Environmental
Protection Agency’s (EPA) 303(d) list of “impaired” water bodies
for the following pollutants: nutrients and organic matter; high
temperatures; low dissolved oxygen; and the blue-green algae toxin
mycrosystin. These have been determined not to support the cold
water fishery and tribal cultural uses of the river. Currently,
the technical data and modeling prepared for the Klamath TMDL
listing is still under “peer review” by fellow
scientists.
The Klamath tributary watersheds of Beaver /Horse Creek and Indian
Creek are also under consideration for listing due to excessive
sediment. (This is based on Klamath National Forest data. There is
currently an open comment period on this pollutant listing
proposal.) TMDLs and EPA approved implementing action plans for
the Shasta and Scott River tributaries have already been completed
and are in place. According to NCRWQCB staff, they also comply
with the Klamath TMDL and will not have to be further altered.
Although TMDLs have been established for the Trinity River
tributary, no implementing action plan has been approved. (In fact
of the 38 segments of 17 rivers for which the EPA was to establish
TMDLs and implementing action plans, only the Scott, Shasta and
Garcia Rivers have been completed.)
NCRWQCB staff explained that the technical TMDL will establish the
amount of pollutants attributed to man that can be allowed to
enter the Klamath River. This is based on the capacity of the
river to handle the pollutants and still support the beneficial
uses. “Point Source Pollution” – pollution that enters through a
specific source like a pipe, requires a federal NPDES permit.
(This includes identified sources such as the Iron Gate
Hatchery.) Non-point sources are either prohibited or will
require either an individual Waste Discharge Requirement (WDR)
permit which costs money, or a WDR waiver that requires land
managers to adopt certain Best Management Practices (BMPs.) The
main activities identified as producing non-point source (NPS)
pollution were timber, grazing, roads and irrigated agriculture.
The Klamath TMDL will have opportunities to handle pollution in
different ways. For instance, rather than attempt to clear algae
from reservoirs, PacifiCorp/Power’s ratepayers may be asked to
fund the establishment of wetlands in the upper basin to filter
nutrients or perhaps fund a water treatment plant at a narrow
point like the Klamath Straits Drain to treat the water or
mechanically remove algae and organic matter before it comes down
river. This is called “trading.” Another approach might be to have
polluters, (identified as timber, grazing, roads and irrigated ag,)
to fund restoration of their watershed to improve the overall
ability of the river to handle “pollutants.” BMPs would include
retention of riparian shade, sediment control, and protection from
warm water runoff. The NCRWQCB is also considering establishing
no-use buffers around the mouths of tributaries that serve as cold
water “refugia,” (cold water holes or spring-fed spots where fish
can gather and escape from warmer water elsewhere in the river.)
KLAMATH DAMS: Last week the Board of Supervisors released a
series of briefings and letters concerning the ongoing Klamath Dam
issue. Copies can be found here posted on 3/4/09
http://www.klamathbasincrisis.org/. Of particular interest
is this document:
http://www.klamathbasincrisis.org/settlement/SiskSupStatementCDMRept030409.pdf
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