River Rise

[FW]

I just find it really interesting to watch the dynamic hydrology when things are flooding/clearing. It's fun trying to notice patterns between different flood events.

It is hard to see patterns, since there are so many variables involved. I have been cavediving in FL for 44 years, and no 2 floods have been alike, other than we couldn't dive some systems

[mer]

It is hard to see patterns

Notice I said TRYING... not succeeding

[gkndivebum]

Thanks for the report Mer, but the river has gone up a foot since yesterday, and I suspect you may have gotten the last good dive in there.[...]

Drat.

I'll be there in about a week and was looking forward to a few dives at Peacock...



Best regards -

gkn
--
Gerard K. Newman | NAUI #48937 | Kona, HI

[jj1987]

It is hard to see patterns, since there are so many variables involved. I have been cavediving in FL for 44 years, and no 2 floods have been alike, other than we couldn't dive some systems

I suspect this is lack of data, rather than lack of a trend. I can't imagine that if you measured flow data, rain, and river level that you couldn't accurately predict things.

[FW]

I suspect this is lack of data, rather than lack of a trend. I can't imagine that if you measured flow data, rain, and river level that you couldn't accurately predict things.

The data is there, but all in different places. What is missing is the onset of reversal at each spring. I don't that has ever been collected.

[jason]

The data is there, but all in different places. What is missing is the onset of reversal at each spring. I don't that has ever been collected.

I'll be working on that one this summer. There is a lot of information about when various reaches of the river start to lose water rather than gain it, which indicates that water is reversing into springs. It doesn't tell you what springs specifically or the order in which they went under, but the information allows us to examine environmental controls on reversal events, such as rainfall amount and location and antecedent aquifer levels. Using that data, we see large variability in the amount of water that is lost along sections of the river during floods that occur following wet periods vs dry periods. Generally speaking, flood magnitudes are being decreased due to low aquifer levels and reversals are occurring at lower river stages. Low aquifers mean more storage space for water and more attenuated flood pulses. Flooding on the Suwannee in 2009 was near-record up by Madison, indicating that we should have had near record flooding downstream. Because the aquifer levels were so low, however, the flooding even at Peacock wasn't even close to a record.

[FW]

I'll be working on that one this summer. There is a lot of information about when various reaches of the river start to lose water rather than gain it, which indicates that water is reversing into springs. It doesn't tell you what springs specifically or the order in which they went under, but the information allows us to examine environmental controls on reversal events, such as rainfall amount and location and antecedent aquifer levels. Using that data, we see large variability in the amount of water that is lost along sections of the river during floods that occur following wet periods vs dry periods. Generally speaking, flood magnitudes are being decreased due to low aquifer levels and reversals are occurring at lower river stages. Low aquifers mean more storage space for water and more attenuated flood pulses. Flooding on the Suwannee in 2009 was near-record up by Madison, indicating that we should have had near record flooding downstream. Because the aquifer levels were so low, however, the flooding even at Peacock wasn't even close to a record.

That would be fantastic Jason. If you need any database help, JJ1987 will be glad to help you

[gasdiver]

I watched a NOVA special the other night entitled "Earth from Space". It detailed a lot of different types of satellite data that has been collected for the last 30 years. One interesting animation showed a bulge in the crater at Mt. St. Helens due to subsurface magma. The documentary stated the accuracy was +- 0.25 inches. There was a large segment of the show dedicated to ocean currents. Just think of what a researcher could do with that data as it relates to the rivers and springs of N. FL. An animation of flood waters as they pulsed down the rivers would be very interesting...

[JillHeinerth]

Jug Hole on Thursday... still gorgeous!
Jill

[Puttzer]

Is peacock flooded yet?