Skip Links

USGS - science for a changing world

Scientific Investigations Report 2013–5135


Modeling the Water-Quality Effects of Changes to the Klamath River Upstream of Keno Dam, Oregon


Table 4. Number of days pH was simulated to be greater than the 9.0 criteria (and the average amount greater than the criteria) at selected Oregon Department of Environmental Quality compliance locations for scenario 3 under the base case and Total Maximum Daily Load scenarios, Klamath River, Oregon, for years 2006–09.


[2007 runs were bracketed by also using input total inorganic carbon calculated with pH during low-bloom conditions (leftmost values when a range is given) for the Link River, Lost River Diversion Channel, and Klamath Straits Drain inputs. Abbreviations: TMDL, total maximum daily load; segment, model segment; WWTP, wastewater treatment plant]


Scenario Days out of compliance with pH criteria (and average amount greater than the criteria)
Klamath River at
WWTP inflows
(segments 4, 8)
Klamath River at
Lost River Diversion
Channel inflow
Klamath River at
Miller Island
Klamath River at
Klamath Straits
Drain inflow
Klamath River
at Keno
Segment 8 Segment 19 Segment 38 Segment 69 Segment 95
2006
3(1a) Base case (current conditions) 90 (0.30) 69 (0.21) 53 (0.19) 28 (0.13) 8 (0.10)
3(1b) Sources at TMDL allocations 90 (0.30) 74 (0.22) 55 (0.20) 29 (0.14) 14 (0.11)
3(2a) Link River at TMDL target 112 (0.51) 93 (0.40) 94 (0.37) 73 (0.28) 62 (0.23)
3(2b) Link River and sources at TMDL 112 (0.51) 101 (0.41) 104 (0.38) 86 (0.30) 79 (0.30)
2007
3(1a) Base case (current conditions) 52 (0.44) 32 (0.55) 24 (0.72) 21 (0.58) 24 (0.55)
3(1b) Sources at TMDL allocations 53 (0.43) 33 (0.55) 24 (0.72) 22–23
(0.58–0.57)
26–27
(0.52–0.55)
3(2a) Link River at TMDL target 7–105

(0.08-0.46)
9–77

(0.08–0.54)
23–78

(0.15–0.51)
18–64

(0.24–0.47)
52–93

(0.23–0.50)
3(2b) Link River and sources at TMDL 6–106

(0.07–0.46)
8–78

(0.06–0.54)
23–79

(0.13–0.50)
19–71

(0.22–0.46)
78–102

(0.23–0.57)
2008
3(1a) Base case (current conditions) 102 (0.44) 69 (0.39) 49 (0.36) 24 (0.18) 9 (0.11)
3(1b) Sources at TMDL allocations 103 (0.44) 71 (0.39) 49 (0.36) 29 (0.18) 15 (0.12)
3(2a) Link River at TMDL target 142 (0.65) 127 (0.54) 110 (0.51) 73 (0.43) 61 (0.38)
3(2b) Link River and sources at TMDL 143 (0.65) 135 (0.53) 119 (0.51) 92 (0.38) 79 (0.39)
2009
3(1a) Base case (current conditions) 90 (0.45) 68 (0.35) 43 (0.27) 13 (0.27) 13 (0.23)
3(1b) Sources at TMDL allocations 91 (0.44) 70 (0.35) 45 (0.27) 15 (0.31) 15 (0.29)
3(2a) Link River at TMDL target 106 (0.74) 101 (0.69) 98 (0.63) 83 (0.45) 82 (0.40)
3(2b) Link River and sources at TMDL 106 (0.74) 101 (0.70) 99 (0.64) 88 (0.48) 90 (0.48)

First posted July 24, 2013

For additional information contact:
Director, Oregon Water Science Center
U.S. Geological Survey
2130 SW 5th Avenue
Portland, Oregon 97201
http://or.water.usgs.gov

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Accessibility FOIA Privacy Policies and Notices

USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/sir/2013/5135/table4.html
Page Contact Information: Contact USGS
Page Last Modified: Monday, July 22, 2013, 07:32:51 PM