Assessment of episodic acidification in the Sierra Nevada, California. Final report, 1987-1989

Technical Report · Tue Aug 01 04:00:00 EDT 1989

OSTI ID:7192529

Schnoor, J L; Nikolaidis, N P; Nikolaidis, V S

Researchers compiled data on 168 low-ANC lakes in the Sierra Nevada, California. They then formulated an Episodic Event Model (EEM) that was used to simulate lake ANC during snowmelt episodes. During snowmelt the surface water ANC is near zero due to dilution from snowmelt. During this period acidification can occur should acidic rain enter the watershed. Using the EEM to simulate a 20-day runoff event at snowmelt, the model results indicate that about 80% of the lakes considered would reach an ANC less than 40 micro eq/l. There are insufficient spatial or temporal data on the chemistry or amount of deposition to high-elevation areas in the Sierra. Also, the model assumes no interaction between the watershed and incoming deposition.

• Research Organization: Department of Energy, Washington, DC (USA). Div. of Conservation Research and Technology
• OSTI ID: 7192529
• Report Number(s): PB-90-157504/XAB
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ACID RAIN
ACIDIFICATION
AIR POLLUTION
ATMOSPHERIC PRECIPITATIONS
CALIFORNIA
DOCUMENT TYPES
ENVIRONMENTAL EFFECTS
FEDERAL REGION IX
LAKES
MATHEMATICAL MODELS
MOUNTAINS
NORTH AMERICA
POLLUTION
PROGRESS REPORT
RAIN
SIMULATION
SNOW
SURFACE WATERS
USA