AHRA SUA Contractors and Private Boaters,
Today, Wednesday, July 28, 2010, two rescue dogs performing a scent search at Frog Rock strongly indicated that the missing person is still located at Frog Rock Rapid. Therefore, Monday, August 2, 2010, a recovery operation is scheduled with the following time table of the reduced flows.
Steve Witte, Division Engineer, Arkansas River Basin, Colorado Division of Water Resources has provided the below noted schedule and operation table regarding the six hour window of reduced flows. Please note that this window of reduced flows is approximately six hours in the upper stretches (Section 3 and above) and six to seven hours in the lower stretches (Section 3 and below).
Proposed Schedule / Operational Time table (All times shown as military time)
First Cut of 100 cfs at Twin Lakes
Second Cut of 100 cfs at Twin Lakes
Third Cut of 100 cfs at Twin Lakes
Cut 125 cfs at Clear Creek
Expect to see first effect of combined first Twin cut & Clear Creek cut @ ARKBGNCO
Expect to see first effect of third Twin cut @ ARKBGNCO
Expect to see first effect of combined first Twin cut & Clear Creek cut @ Frog Rock
Expect to see flow @ Frog Rock approaching minimum
Reopen Twin Lakes and Clear Creek
Should begin to see increasing flows at Frog Rock
Flow at Frog Rock will be approaching pre-existing levels unless reopen is delayed
Expect decreasing flow at Nathrop
Expect minimum flow at Nathrop
Expect decreasing flow at Wellsville
Expect minimum flow at Wellsville
Flow at Nathrop should be recovered to pre-existing levels
Flow at Wellsville should be recovered to pre-existing level
Expect decreasing flow at Parkdale
Expect minimum flow at Parkdale
Expect decreasing flow at Canon City
Expect minimum flow at Canon City
Flow at Parkdale should be recovered to pre-existing level
Flow at Canon City should be recovering to pre-existing level
The attached additional table (pdf) is provided by John Kreski (AHRA) regarding reduced water flows by sections (projected estimations). These time blocks for reduced flows are for the entire section. Example, in Section 5 Mr. Witte is projecting pre-existing flows to recover at the Parkdale gage by 9:30 am. However, within Section 5 the reduced flow window is still in the Royal Gorge Canyon. My recommendation is to check the Parkdale Gage the morning of August 3rdfor exact readings.
If you have any questions, please contact AHRA.
AHRA Rationing & Agreement Coordinator
307 West Sackett Ave.
Salida, CO 81201