The committee issued its report on December 10, 1981, recommending passage of the bill as amended. The section of the bill pertaining to Crater Lake included the language originally introduced by Hatfield. Furthermore, a provision was added relative to water quality testing of the lake:
. . . The Secretary of the Interior is authorized and directed to promptly instigate studies and investigations as to the status and trends of change of the water quality of Crater Lake, and to immediately implement such actions as may be necessary to assure the retention of the lake’s natural pristine water quality.
Within two years of the effective date of this provision, and biennially thereafter for a period of ten years, the Secretary shall report the results of such studies and investigations, and any implementation actions instigated, to the appropriate committees of the Congress.
The committee felt that Section C was important in that the lake had “long been considered to contain some of the deepest and most pure water in the world.” Research conducted in recent years had indicated “that water clarity of the lake” had been “reduced by 25% over the last 13 years.” Thus, the committee was concerned that further studies be conducted and steps taken to assure the purity and clarity of the water in Crater Lake. [40]
The Senate concurred with the House amendments on August 19, 1982. Thereafter, it was signed into law (96 Stat. 709) by President Ronald Reagan on September 15. [41]
As congressional debate on this legislation indicated there was increasing concern about the clarity of the water in Crater Lake. Independent studies of Crater Lake during the late 1970s and early 1980s suggested that the lake had decreased in transparency and that the species composition and distribution of the phytoplankton had changed relative to results from short-term studies conducted between 1913 and 1969. Evaluation found that the transparency and phytoplankton data were inadequate for the basis of any definitive conclusions on whether long-term changes had occurred in lake water quality. To build on the existing baseline data, however, the National Park Service initiated a limnological study of Crater Lake during the summer of 1982 while the aforementioned legislation was being debated in Congress. [42]
As a result of this legislation a comprehensive Crater Lake Limnological Studies program was initiated during the summer of 1983. The broad objectives of the program were to (1) develop a reliable limnological data base for the lake for use as a benchmark or basis for future comparison; (2) provide a better understanding of physical, chemical, and biological characteristics and processes of the lake; and (3) establish a long-term monitoring program to examine the characteristics (i.e., temperature, pH, visibility, chlorophyll, and phytoplankton levels) of the lake through time. The purpose of the applied limnological investigations was to examine changing lake conditions and carry out studies to identify the causes of any changes that were found to exist. [43]
Further refinements were made to the Crater Lake limnological program in 1985 and 1986. New studies were initiated to determine the relationship between the fisheries population and the various lake organisms. During the summer of 1985 a research boat plan was approved and a boathouse was constructed on Wizard Island for the purpose of storing the three lake research boats–Boston Whaler, Gregor Pontoon Boat, and Livingston. [44]
