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| Spillway at Lake Granby as seen from below |
The elevation of Lake Granby is now above the spillway elevation of 8,260 feet. Currently, the radial gates at the top of the spillway are closed, preventing water from flowing down the spillway. This morning, Northern Water’s West Slope operators will open the gates and water will start flowing down the spillway for the first time in 11 years. At first, the outflows will be rather small, on the order of 100 cfs or less. But as Lake Granby continues to fill, more and more water will flow down the spillway.
The increases in outflows will be evident at the
downstream USGS gage.
Note that releases from the outlet valves will continue at approximately 410 cfs. The combined release from the valves and from the spillway will be approximately 500 cfs.
