Recently, a presentation was given to the
Mokelumne River Water Council Forum on the regulation and control of aquatic
species of birds, specifically geese, impacting Lake Camanche. The conditions of some of the
beaches around the popular lake, at times have been declared unhealthy, and the
beaches have been closed.
Last summer, the summer of 2006, some beaches were closed for as long as 10
weeks after e-coli was found present in water samples. Although camp
grounds remained open, beach access from those campgrounds was closed to
visitors. According to Mark
Bolton, East Bay Municipal Utilities District Camanche Recreation Unit
Supervisor, the problem is taking some time to work out.
Generally a migratory bird, the Canada Geese
that call Camanche home, have now become resident migratory birds, meaning they
may fly from pond to pond in the general Ione area but then head back to home
base, the shores of Lake Camanche. This is where the problem begins, on the shores of the Lake
Camanche Reservoir. The geese live and eat on the shores of the lake. As the water level rises in the
spring it covers over the habitat of the geese and in turn, washes their waste
matter into the water creating high levels of e-coli and coli form bacteria in
some sections of the lake. Bolton
explains that this is not really a goose population issue, but instead a water
quality issue. Bolton states that in order to
find the source of the e-coli in the water, East Bay MUD took several steps,
including the study of the river channel under the lake, the impacts of cattle
grazing on the shores, and finally an expensive DNA analysis of the bacteria in
the water.
The culprit was
identified, through the DNA analysis, with a 90 percent certainty to be the
geese.Purdue
University lab, that some
population controls on the Lakes’ geese would be warranted. Now East Bay MD officials face
another obstacle to solving the water quality issue- bureaucracy in the forms
of the US Fish and Wildlife Service and the California State Fish and Game.
Under federal rules removing some of the goose population from the lake,
through legalized permitted hunts, required permits from the California State
Department of Fish and Game. Previously, this was a matter handled by the
Federal Government. The State of California,
however, stated that they can not permit hunts because of laws all ready on the
books in California.
In other words, East Bay MUD
is caught between the feds- saying you must go to the state- and the state
saying “we can’t allow it”. The only other option was to hunt the geese
during hunting season and by the time all of this was worked out Bolton had 2 weeks to organize a contract hunt by a
specialized hunter for the geese at Camanche.
In the last week of January 2007
192 geese were removed from the population at the lake- but did it make a
marked difference? “It’s
hard to quantify a difference” states Bolton,
“In December of 2006 we counted 800 geese. After the hunt we counted 1200”
he says. Although he does qualify those numbers by stating that because of the
local migratory habits of the birds it is difficult to get an accurate number
for the geese in the area. Next year says Bolton East Bay MUD is considering
more efforts during the upcoming legal hunting system to help with resolution of
the issue. East Bay MUD then determined, after the testing by both their own
lab, and the
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