The CarrollCaveConservancy archives for the Hydrology category.

3/31/2018 – Finish anchoring stilling well, reposition rope light

looks like snotites. They are probably strands of calcite that is not yet hard. I got that stuff all over me!

Flood events in Lower Thunder River

In early January 2018 Carroll Cave Conservancy bought and installed another stream level data logger.  The new logger is located about 150 feet downstream from Thunder Falls. The hypothesis supporting the new logger is that Lower Thunder River floods before Upper Thunder River.  The flood progression is for Upper Thunder River to run at normal […]

2017 Hydrology Project Report

2017 was, with one exception, a rather dull year regarding hydrology events in Carroll Cave.  Two major floods were recorded along with one minor flood. The major floods occurred on 29 April and 5 May.  In both cases Thunder River rose to a bit over 20 feet.  This is not the highest level we have […]

1/6/2018 – Data Logger Service

we had a bag of tools, a concrete block and a new stilling well

5/13/2017 – eDNA sample collection

The weather was nearly perfect – sunny and about 80 degrees

4/15/2017 – eDNA sample collection

There were 2 or 3 fish right at the sample site

1/28/2017 – Annual data logger date collection trip

The Rimstone Room still has some carbide dumps that need to be picked up.  The rock wall that protects a formation about halfway from the ladder to the Rimstone Room is mostly knocked apart. 

2016 Stream Flow Project annual report

2016 was a pretty boring year for the stream flow project.  There were no major flood events in the cave. 2015 ended with a major flood, reaching 24 feet in Thunder River.  The effects of that flood lingered over to the first two days of 2016.  By January 3 the river was back down to […]

13 February 2016 – far down Thunder river Lake Room snorkeling

It was several lengths of iron pipe strapped together. Three green 6 gallon water jugs were attached, obviously to act as floats.

2015 Stream Flow Report

2015 was a very exciting year for the stream flow project. The batteries in the data loggers finally expired, so we had to send them in for replacement.  That cost the Conservancy a bit over $500.  We do not have any data for January and most of February.  The batteries lasted almost 7 years, so […]