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Hi everyone. My name is Nick Stasulis and I'm a Hydrologic Technician with the Maine Office of the
USGS. Today, we're on the Carrabassett River near North Anson, our station number 01047000.
We're out today performing maintenance on some of our manned cableways. These manned cableways
allow us to access the river fordischarge measurements in places where boat access is impossible and
there are no bridge crossings. We use these cableways to make discharge measurements by lowering a
velocity meter down to the water. Of course, these velocity meters give us the speed of the water. We
use the cableway markings to measure our distance across the river and we use our velocity meter to
sound the bottom of the river. Once we've sounded the bottom of the river and measured the distance
we've moved, we can compute the area of our cross section. Using the velocity readings from our
velocity meter, we can then compute the discharge, in cubic feet per second, of the water flowing past
this cross section.
Now that maintenance is complete, and we feel the cableway is safe, we'd like to take you out
for a ride. So let's go.
This cableway has an aluminum cablecar that is suspended on a 1-inch steel cable. The cablecar has
sheaves that ride on top of the steel cable, a brake that allow us to slow or stop our motion, and a puller
that we clip onto the cable and allow us to pull ourselves up the slope on either bank. The slope in the 1-
inch steel cable is an engineering design. It reduces the overall stress on the cableway system. The
tighter the cable, the more stress we put on our system. On either bank, the 1-inch steel cable is
secured with a large concrete mass anchor. Now, let's go for that ride.
(Noise of cablecar going along cable)
As you can see, we are over on the other side of the river. After the momentum of the cablecar stopped,
I purposefully stopped recording.Pulling a manned cableway up one bank of the river can be a pretty
strenuous process, and honestly, I didn't want to embarass myself.
You'll notice we picked up quite a bit of speed as we were coming over to this bank of the river. During a
routine measurement, we wouldn't go nearly that fast. We would stop at 25 or 30 locations across the
river taking depth and velocity readings, noting the distance we've moved across the river. This
information would allow us to compute our discharge measurement. After our measurement was done,
we'd return to the bank that we started from, load up our gear, and hit the road.
(Noise of cablecar going along cable)
My arm was getting a little bit tired as I was pulling myself up to the bank we started on and I thought I'd
take this opportunity to give you this view of our gage house.
This gage house is a 4 foot by 4 foot concrete structure. That round bucket you see on the top is a
precipitation bucket that weighs the amountof precipitation that's fallen into it. We also have an air
temperature sensor at this gage. Inside of the gage house there is equipment with a line attached to it.
That line runs out into the river and it monitors the height of the water above the end of that line.
We collect this gage height information and transmit it by satellite using the antenna that you see on the
top of the structure. This gage height information goes back to our database and is applied to a rating
for discharge that is specific to this site. The gage height and the discharge information for this station
are then reported to the web.
Hopefully you've enjoyed this tour of our cableway and gaging station here on the Carrabassett River. I'd
like to take a moment to remind you that without proper training and experience in both the operation
and inspection of these cableways they can be very dangerous and we ask that you do not damage or
disturb any of the manned cableways that you see across the country that are operated and maintained
by the USGS or any other agency.
Title: USGS Science in Maine - Visit to 01047000
In this video we visit a USGS gaging station on the Carrabassett River near North Anson, Maine, station 01047000. We briefly discuss the manned cableway at the site and highlight some features of the gaging station itself.
Location: North Anson, ME, USA
Date Taken: 8/22/2013
Video Producer: Nick Stasulis , U.S. Geological Survey
Note: This video has been released into the public domain by the U.S. Geological Survey for use in its entirety. Some videos may contain pieces of copyrighted material. If you wish to use a portion of the video for any purpose, other than for resharing/reposting the video in its entirety, please contact the Video Producer/Videographer listed with this video. Please refer to the USGS Copyright section for how to credit this video.
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