Mono Lake Crisis: Ecology, Law, and Water Rights
This paper examines the Mono Lake environmental crisis in California, in which large-scale water diversions from Mono Basin to the Los Angeles Aqueduct beginning in 1941 severely damaged the lake's ecosystem. As water levels fell and salinity doubled, algae, brine shrimp, and migratory bird populations all suffered. The paper reviews the scientific data behind the decline, analyzes the social and legislative barriers conservationists faced, and traces the legal victory won by the Mono Lake Committee. It also outlines the restoration actions taken after the 1989 State Water Resources Control Board ruling and reflects on broader lessons about environmental prevention and the public trust doctrine.
- Overview of the Mono Lake Crisis: Water diversion, ecological damage, and early legal response
- Scientific Data on Water Loss and Ecosystem Decline: Evaporation rates, salinity doubling, and dust storms
- Social and Legislative Barriers to Conservation: Public resistance and 1928 water rights amendment
- Actions Taken to Restore the Lake: Creek restoration, native planting, and reserve protection
- Ramifications of the Ruling: LA water cuts and expansion of public trust doctrine
- Recommendations: Tourism balance, prevention, and early intervention lessons
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What makes this paper effective
- Moves logically from problem to evidence to legal context to resolution, giving the reader a clear narrative arc.
- Integrates scientific data (evaporation rates, acre-feet figures, salinity changes) with policy analysis, grounding legal arguments in measurable ecological facts.
- Identifies both social and legislative barriers separately, showing that conservationists had to overcome public resistance and legal precedent simultaneously.
- Ends with forward-looking recommendations rather than simply restating the outcome, demonstrating applied thinking.
Key academic technique demonstrated
The paper demonstrates cause-and-effect analysis across multiple domains simultaneously. It traces how a single policy decision—water diversion—produced cascading effects on ecology (algae → brine shrimp → California Gulls), public health (dust storms), legal doctrine (public trust), and urban water policy (15–20% LA consumption cuts). This multi-domain causal chain is a strong model for environmental case study writing.
Structure breakdown
The paper follows a six-part case study structure: (1) crisis summary, (2) scientific evidence, (3) barriers to action, (4) corrective measures, (5) legal and social ramifications, and (6) recommendations. Each section builds on the previous one, creating a self-contained but interconnected analysis of a real environmental dispute from inception to partial resolution.
Overview of the Mono Lake Crisis
Mono Lake, located in eastern California near the city of Los Angeles, has been in the spotlight for the extensive environmental damage done to it over the past several decades. As the population of Los Angeles soared, the city faced a shortage of water for its residents. This semi-arid region had few options to meet the growing water needs of its population, so Mono Basin became a prospective source of supply. By 1941, water was being diverted from four of the five streams feeding Mono Lake into the LA Aqueduct (Kahrl, 1983).
This water diversion benefited the Los Angeles Department of Water and Power (LADWP) and city consumers alike, because water from Mono Basin was available at a lower cost than water from other sources such as the Colorado River. The favorable economics increased demand, and more water was drawn from the basin over time. Soon, water levels in the lake began to fall and salinity began to rise. This triggered a disruption of the local ecosystem. Algae in the lake provides food for brine shrimp, which in turn attract California Gulls that use Mono Lake as a resting stop during migration. The increased salinity impaired algae by preventing photosynthesis, which in turn disrupted the reproduction cycles of the brine shrimp. Additionally, falling water levels exposed the lake bed, making it easier for predators such as raccoons to attack nesting California Gulls. Together, these changes caused widespread ecological damage in the surrounding area.
As residents and environmental groups came to understand the scale of the problem, legal battles began. The Mono Lake Committee was formed in 1976 and pursued extended legal proceedings to restore the lake's water levels. Finally, on August 22, 1989, the California State Water Resources Control Board (SWRCB) ruled that the city of Los Angeles must allow Mono Lake's water level to rise to an elevation of 6,391 feet above sea level — an increase of approximately 17 feet (Strong-Aufhauser, 1995). This ruling effectively ended large-scale diversions from the lake, and water levels have been rising since.
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