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Desolation Canyon at low water

 
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Railtramp

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Since: Jun 07, 2007
Posts: 4



(Msg. 1) Posted: Sun Jul 15, 2007 12:25 pm
Post subject: Desolation Canyon at low water
Archived from groups: rec>boats>paddle (more info?)

I was the motive power on a single raft three person trip just
recently completed on the Green River through Desolation Canyon. We
put in on July 4th. The river was running 2200 cfs. This was our
third trip through Deso in the last 15 years, the others being run at
22000 cfs and 8000 cfs. We spent a full week on the water.

The low water made it interesting. In the first 20 miles, Sandbars
were the biggest obstacle. We ran into several situations where the
river widened and the water was only a single oar blade deep. This
made picking ones course a more focused task. But at 8 inches deep,
one could jump in and play in the relatively warm water just about
anywhere. And we discovered that nearly all of the river has a nice
sand bottom.

All camps offered much more beach front and it was interesting to see
what was under all of those nice Class III rapids whose rollercoaster
rides were so enjoyable at higher flow. Chandler Falls, Wire Fence and
Three Fords remained good rapids. Coal Creek and Rattlesnake were
rocky and technical. (No rocks were hit during the running of these
rapids). We used an 11 ft oar in the flat water upper reaches and
then switched to a 10 ft oar for the remainder of trip.

The weather was wonderful. A full 100+ degrees and bright sun
everyday day. Dry thunderstorms appeared in late afternoon after the
4th day. After a tough afternoon of battling strong upsteam winds
and gaining only 8 miles, we modified our shedule for early starts.
This worked well and put us at next camp well before any winds came
up.

Being from the Northwoods, we had always been skeptical of warnings of
Desert Bears. Well, I can tell you first hand that they do exist.
At our first camp, I awoke to the sound of splashings in the river and
got up to witness a medium sized black bear and cub emerge from the
river and stroll across the beach opposite from us. A second cub
spent the better part of 5 minutes swimming back and forth in the
river before joining the others. Later we learned from the BLM ranger
that bears had been problematic at Cow Swim as well. One had climbed
into a boat down there looking for food.

We also saw two elk along the way. They were down along the river
much earlier in the season than what would be normal. And we observed
a Mountain Goat posing for us. And finally, a swimming Rattlesnake.

Special thanks to the BLM rangers Skip and Jim for their hospitality
and guidance. I would easily surrender a valuable body part (or two)
to have a job like that.

One thing that was very noticable however was the increase in oil/gas
exploration. The road into Sand Wash was much improved over previous
years. Drilling rigs and pipelines were every where on the first
half of the drive in. We were told that they are right along the
river in the upper Unita Basin. And on the drive back on I70 out of
Grand Junction, we did see many drilling rigs right along the banks of
the Colorado as well.

In summary, I can tell you that Deso at low water is still a wondeful
experience. While much changes, you discover new things to
appreciate. We hope there is a lot of snow next year, but if not, we
will still be in the lottery trying for a slot.

Blakely
---
Blakely LaCroix
Minneapolis, Minnesota, USA

"The best adventure is yet to come"

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Bill Tuthill

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Since: Sep 05, 2006
Posts: 87



(Msg. 2) Posted: Mon Jul 16, 2007 10:37 am
Post subject: Re: Desolation Canyon at low water [Login to view extended thread Info.]
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Thanks for the TR, Blakely.

Railtramp <Railtramp.RemoveThis@aol.com> wrote:
> We used an 11 ft oar in the flat water upper reaches and then
> switched to a 10 ft oar for the remainder of trip.

What size raft did you row?

Also, how far below put-in did you camp to avoid mosquitos?
Rumor has it they're very bad at Sand Wash put-in.

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Oci-One Kanubi

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Since: Jun 01, 2007
Posts: 12



(Msg. 3) Posted: Mon Jul 16, 2007 10:55 am
Post subject: Re: Desolation Canyon at low water [Login to view extended thread Info.]
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On Jul 15, 3:25 pm, Railtramp <Railtr....TakeThisOut@aol.com> wrote:
> >
> > [a nice Desolation Canyon trip report]
> >
> Blakely
> ---
> Blakely LaCroix
> Minneapolis, Minnesota, USA

Thanks for that, Blakely. The Green/Yampa/Colorado system is my
favorite as-yet-unrun river destination (except for a little 10-mile
stretch of the Green through Split Mountain in Dinosaur that we caught
a permit for last summer).

-Richard, His Kanubic Travesty
--
======================================================================
Richard Hopley Winston-Salem, NC, USA
.. rhopley[at]earthlink[dot]net
.. Nothing really matters except Boats, Sex, and Rock'n'Roll
.. rhopley[at]wfubmc[dot]edu
.. OK, OK; computer programming for scientific research also matters
======================================================================
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Railtramp

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Since: Jun 07, 2007
Posts: 4



(Msg. 4) Posted: Mon Jul 16, 2007 11:45 am
Post subject: Re: Desolation Canyon at low water [Login to view extended thread Info.]
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On Jul 16, 12:37?pm, Bill Tuthill <ccree....RemoveThis@yahoo.com> wrote:
> Thanks for the TR, Blakely.
>
> Railtramp <Railtr....RemoveThis@aol.com> wrote:
> > We used an 11 ft oar in the flat water upper reaches and then
> > switched to a 10 ft oar for the remainder of trip.
>
> What size raft did you row?
>
> Also, how far below put-in did you camp to avoid mosquitos?
> Rumor has it they're very bad at Sand Wash put-in.

I run an Aire 15R6 (15 1/2 foot long - 72 inch wide) with a Big Horn
II frame. The long oars are Cataract SGX single piece composites and
the shorter are Carlisle two piece Aluminum. I carried the Carlisles
with 1 foot extenders as a spare set when running the SGX's. That way,
if I lost an oar, I could still have the lengths match when I grabbed
the spare.

The SGX are my normal primary oar. I run a longer oar than one would
expect for that size raft. The weight difference between the SGX and
the Carlisles allows me to run a longer oar and still keep the inboard
weight managable. I run open oar locks and have them optimized for
front facing rowing (Portagee). Running with a longer oar has also
improved (i think anyway) my rowing style, by forcing me into a
shorter and more frequent stroke. This keeps the blade to water angle
closer to perpendicular than longer and more heroic appearing deep
reaches. The blade depth is similarly optimized by the same geometry.

We usually arrive a day early to rig the raft. This allows us to get
checked out early and be the first boat out in the morning. We do 16
to 18 miles the first day, just to put most of the flat water behind
us. Then we slow down, lest we come out the other side too fast.

This year, there were no mosquitos at all. But we did encounter deer
flies on the water over the course of the entire trip. Personally, I
would prefer the mosquitos. At least they don't hurt when they bite.
But bug spray kept them away.

The year we ran at 22,000 cfs, we were just coming off of the peak
flow. Every mosquito egg from the last 100 years in every then full
backwater seemed to hatch. We put in that year at the Dinosaur take
out and floated the 110 miles into Sand Wash. There were a couple of
camps above Sand Wash where the mosquitos were so bad, we could not
cook or eat outside. When we landed to scout a camp, they would swarm
out of the Tamarisk and literally chase us downstream. Yet, bad as
they were upstream, Sand Wash was not too bad, and by Jack Creek,
there were not any to speak of.

The upper Unita Basin was the second worst mosquito site I had ever
encountered. The only one worse was at James Kipp park on the
Missouri, where you had to tie on a bandana to prevent them from being
inhaled by the dozens when you breathed. It was worse than the "Arm
in the Mosquito Cage" adds you see for repellants. And coming for
Minnesota, I have a good bit of tolerance for the little buggers.

The 8,000 cfs year had a few mosquitos at Sand Wash, but again, they
were gone after a day's travel. A little bug spray was all that was
needed to keep them away. We chuckled a bit to ourselves that year
when, after rigging the boat and setting up camp, we were met by a
busload of commercial passengers, all outfitted in heavy raincoat
style "Bug Suits" with bit headscreens. It was only about 90 F at the
time. They made Sand Wash look like a CDC quarantine area!

Blakely
---
Blakely LaCroix
Minneapolis, Minnesota, USA

"The best adventure is yet to come"
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Bill Tuthill

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Since: Sep 05, 2006
Posts: 87



(Msg. 5) Posted: Tue Jul 17, 2007 10:51 am
Post subject: Re: Desolation Canyon at low water [Login to view extended thread Info.]
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Railtramp <Railtramp RemoveThis @aol.com> wrote:
>
> I run an Aire 15R6 (15 1/2 foot long - 72 inch wide) with a Big Horn
> II frame. The long oars are Cataract SGX single piece composites and
> the shorter are Carlisle two piece Aluminum. I carried the Carlisles
> with 1 foot extenders as a spare set when running the SGX's. That way,
> if I lost an oar, I could still have the lengths match when I grabbed
> the spare.

Good plan. The reason I asked is that my 9' oars seem plenty long enough,
but I row a 14' raft (Maravia Williwaw I), which is only 6'8" wide.
Wait a minute, that is 80 inches, wider than yours! Let me check... yup.
According to AIRE.com your 156R is 7'2" or 86 (not 72) inches wide.

Those Cataract SGX oars certainly are nice. What do you use for blades?
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Railtramp

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Since: Jun 07, 2007
Posts: 4



(Msg. 6) Posted: Tue Jul 17, 2007 5:13 pm
Post subject: Re: Desolation Canyon at low water [Login to view extended thread Info.]
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On Jul 16, 1:45?pm, Railtramp <Railtr... RemoveThis @aol.com> wrote:
>>
>> I run an Aire 15R6 (15 1/2 foot long - 72 inch wide) with a Big Horn
>> II frame. The long oars are Cataract SGX single piece composites and
>> the shorter are Carlisle two piece Aluminum. I carried the Carlisles
>> with 1 foot extenders as a spare set when running the SGX's. That way,
>> if I lost an oar, I could still have the lengths match when I grabbed
>> the spare.

>Good plan. The reason I asked is that my 9' oars seem plenty long enough,
>but I row a 14' raft (Maravia Williwaw I), which is only 6'8" wide.
>Wait a minute, that is 80 inches, wider than yours! Let me check... yup.
>According to AIRE.com your 156R is 7'2" or 86 (not 72) inches wide.

>Those Cataract SGX oars certainly are nice. What do you use for blades?
--- --- --- --- --- --- ---

My mistake - the 72 inches is the center to center distance of the oar
locks
not the raft width. That is the number that stays in my head. I am
including
an earlier post below about calculating the mechanical advantage of
oars. This
also addresses the blade width.

--- --- --- --- --- --- --- Copy of earlier post on oar
calculations.

I would further submit that oar length is what most affects the issue
of
stiffness. I moved to a longer oar simply to improve the angle the
blade makes
with the river. By moving through a smaller angle, the blade remains
more
perpendicular to the water longer. This also shortens the reach and
pull the
rower must take and make, resulting in shorter and more frequent
strokes. This
comes at the expense of added weight felt at the handles. The lighter
weight
composites really help here. On a longer oar, to be sure, the issue
of flex
becomes more pronounced.

Oar math for the analytically minded:

1) Measure the distance from oarlock to oarlock on your boat. (Mine
is 72").
2) Subtract the desired spacing between the handles. (Say 6")
3) Divide by 2. (Two oars after all). This is the inboard length of
your oar.
In this example = 33".
4) Measure your oar from the tip of the handles to the center of the
blade.
For an 11 foot oar, minus the half of the blade length = 118.
5) Subtract the inboard length. = 118 - 33 = 85 inches.
6) The ratio the inboard length to outboard length determines the
relative
movements. For our 11 foot oar example: = 85/33 = 2.6

For a quick calculation, this ratio is (Length of oar/Inboard length)
- 1

Thus for every inch you move the inboard part of an 11 foot oar about
the pivot, the outboard part will move 2.6 inches. If the oars can
flex N inches at the end, then you will lose N/2.6 inches of effective
inboard travel. Less rigid oars necessitate a deeper reach and
longer pull.

On blades ....(in response to a question about 7" blades)

Pluses and Minuses here too. By having a larger blade, you can vary
the depth
of immersion from zero to 7 inches. Going deeper than the width of
the blade
doesn't do much for you. On the other hand, you will need to clear
the blades
above the surface of the water to move them. A wider blade is going
to result
in more vertical displacement at the handles. (same ratio as above)
Thus you
will be moving the handle weight of the oars through a longer
distance. Unless
you feather your blades, the wider blade will result in more loss to
windage.

--- --- --- --- --- --- --- End of earlier posting.

I run the Carlisle Outfitter blades which are 6 1/2 inches wide.
Again, the rational
is to minimize the inboard travel distance and increase the rate at
which the oars
can be moved. I have not tried a wider blade though.

Blakely
---
Blakely LaCroix
Minneapolis, Minnesota, USA


"The best adventure is yet to come"
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