We were just informed by the Provo River Commissioner that the lower Provo River will be coming back up 600 cfs over the next 30 hours. The combination of how fast Jordanelle Reservoir has been filling (21 feet in 16 days), how slowly the snow pack at Trial Lake has been falling (still at 30", compared to a normal April peak of 25"), along with the forecast for hot weather this week has caused some concern. The objective is to make sure that the reservoirs do not fill before the high runoff in the upper Provo River is past.
This situation is still not a major concern. The flows in Provo River through town will now be in the 1100 - 1200 cfs range over the next week, well below earlier peak flows (1900 cfs). The Lake Shore Pump Station will be turned back on; and other temporary pump facilities will remain mobilized, in case flows increase further.
The most significant impacts of this increase in Provo River flow will be that the elevation of Utah Lake may start rising again; and that the lower Provo River may again overflow the trail along the north bank, upstream of the State Park.
We will continue to monitor the situation, and update you as circumstances warrant.
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