The level of the Great Salt Lake has dropped another 2.4 inches, leaving the inland sea at its lowest level since March 1983, according to the National Weather Service.

The elevation of the lake was reported Monday at 4,202.6 feet above mean sea level, .2 of a foot below the level observed Sept. 15.Meantime, the weather service said precipitation for September was generally above average in the mountains and below average in the valleys.

Overall, however, water-year accumulations were about 75 percent of normal.

Chief meteorologist William Alder said the Great Salt Lake is 2.1 feet lower than Oct. 1, 1989, and 9.25 feet below the record peak elevation of 4,211.85 feet set in April 1987.

Alder said the lake should continue to drop throughout the fall, with runoff remaining much below average. The lake is expected to drop another 4.8 inches by late fall, he said.

The Oct. 1 level of Utah Lake was 4,482.43 feet above mean sea level, .36 of an inch higher than the level recorded Sept. 15. Utah Lake is now 4.06 feet below the 1990 seasonal peak on April 12 and 1.42 feet lower than a year ago.

Utah Lake is being pumped at an average rate of 150 cubic feet per second to provide irrigation water for downstream users.

Alder said that while the lake actually rose .03 feet from the last observation, its level is expected to drop throughout the fall.