Originally Posted by Dave Frank
Can't they just use some extra water out of strontia springs ahead of time, so there is a little buffer space to do a release weather the demand exists that weekend or not?
For that matter can't they just raise and lower strontia springs on a regular basis to make room for regular releases? Is S.S. even full?
Dave, using storage to deliver higher flows short term is a good idea. I've approached denver water about this, and we discussed it in detail. There's a ton of details and boundary conditions, but Denver Water has agreed to use storage to move more water than demand calls for if we can't meet the minimum 300 threshold for the event. They could probably deliver an extra 50ish cfs to help out the event, and they have been planning for this backup.
Strontia isn't the best storage to use as lowering the res sucks in sediment and causes water quality problems. Strontia is also a small res. Chatfield is much larger and is the reservoir targeted for storage if needed for the event.
I'll continue to explore using storage with denver water. At this point using storage to allow for significant flows (ie several hundred cfs) isn't something denver water is willing to do. Denver water has given me some specific reasons for this such as wanting to keep the water high in the system for flexibility, the fact that higher water has better quality and is easier to treat for water supply, and the fact that they have many boundary conditions on the reservoirs for recreation as well.
As for rain canceling the event... yes it would suck. Denver water has agreed to a rain date (probably labor day) if we get rained out. It would take a lot of rain to cancel the event, not just a little rain. It would take the amount of rain we are getting right now to cancel the event... its rare, but it does happen. I'm hoping we get a week or so of rain and its dry during the event.