X Marks the Spot
There has been some confusion regarding whether or
not one should pick up the photo-panels lying around the river corridor. I hope this
article will be helpful.
Photo- panels have been used for a number of years as a means for referencing
aerial photographs to exact points on the ground. This is required for accurate
delineation of vegetation, habitat areas, sand bar movement, etc. The panels are used to
keep the photographs properly aligned with the geographic coordinate system used in the
canyon; they are essential to the integrity of individual research projects and the
long-term monitoring program. We know the panels are an eyesore, but they serve a very
important research function.
There have, however, been several incidents in the past where panels were
left in place much longer than necessary. The panels only have to be in place long enough
for the aerial photographs to be taken. This usually means that panels shouldnt have
to be on the ground longer than 3 or 4 weeks. If the panels get removed before
the aerial photo flight, then that area of the photograph will not get accurate
referencing, It is GCES intention not to leave panels in place between aerial photo
There is probably more than one rotting panel still waiting to be taken out
of the Canyon. Because of these mistakes, we have called GCRG for assistance.
Several guides were recently asked to pick up panels from a Memorial Day
photo shoot. These folks put in many hot hours hiking to panel locations, only to find
that the panels had already been removed. While we could not explain the removal, it
became evident that a better means of communication was necessary. Accordingly, GCES
proposes the following methods for getting this information to the guides:
1) On each panel placed, we will write the date it can be removed.
2) We will inform the Lees Ferry Rangers of anticipated photo shoot dates and
locations and panel pick-up dates, so that guides have an idea of how long a panel should
remain in a given area.
3) If you find a fading or rotting panel, please pick it up and put a small
cairn where it was.
4) Please return all panels to the GCES office.
Your efforts to help us keep the Canyon clean are very much appreciated. If
you have any questions, please call Chris Brod, Mark Gonzales, or Frank Protiva at the
GCES Survey Dept., (602) 556-7459.