Folsom Lake surpassed the 400-foot elevation mark Monday, allowing park rangers to drop the 5 mph speed limit at the popular boating area.

The reservoir was sitting at 403 feet as of 3 a.m. Tuesday and continued to rise as runoff from recent storms poured down the North, Middle and South Forks of the American River.

For the past week, the lake was rising an average of two feet per day, according to the California Data Exchange.

The 5 mph speed limit was implemented on July 13 when the lake dropped below 400 feet, cutting the summer recreation season short.

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