GregC
Well-Known Member
Dave and or Grant,
How is the amount of water flowing in to Lake Powell calculated? I click on Dave's link to the river flows into the lake and haven't seen a three hour period less than 8,000 a.f. for at least three or four weeks. The "Inflow" column on the main water-data page is always much different, with sometimes an inflow larger than the outflow, but still a decrease in the lake elevation. I assume that there is no weir to measure the actual inflow, so you either are using a "best guess" method, or using the lake level minus the known outflow through the dam (with a guess at adsorption + evaporation) to come up with the inflow, regardless of the measured aggregation of the river inflows.
Or, is it something else?
GregC
How is the amount of water flowing in to Lake Powell calculated? I click on Dave's link to the river flows into the lake and haven't seen a three hour period less than 8,000 a.f. for at least three or four weeks. The "Inflow" column on the main water-data page is always much different, with sometimes an inflow larger than the outflow, but still a decrease in the lake elevation. I assume that there is no weir to measure the actual inflow, so you either are using a "best guess" method, or using the lake level minus the known outflow through the dam (with a guess at adsorption + evaporation) to come up with the inflow, regardless of the measured aggregation of the river inflows.
Or, is it something else?
GregC
