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 The Trek: The Journals

•
Team: South
Julie Overbaugh
Tuesday, September 10
September 10, 2002-Day 42- Tuesday-Lake Powell


Morning campsite is Labyrinth Canyon in Padre Bay.
Our nighttime campsite is Oak Creek Canyon.
Another cloudy morning on Lake Powell, surrounded by the salmon colored buttes, mesas, pinnacles and plateaus. It is an eerie place. It is incongruent to me. It is solid rock, mixed with a little sand and water. Lots of water. And few living things. There is not much flora or fauna. On the beach in front of me there is a few scrubby green grasses and bushes.

There are 9 of us on the houseboat; Bob, our trip leader, Lorie, our former cook, then our alternates, Jacob, Jessica, and Kay, and the 4 trekkers, Jan, Cathy, Richard, and I. Next door to us we have another houseboat, which has 2 guys from Honda, Travis Travniker and Richard Burton. And of course our boat captain, Steve Ward who is the director of Public Relations for Lake Powell. He possesses an incredible amount of knowledge on Lake Powell. Lake Powell has 1,960 miles of shoreline and 96 large canyons in 2 states; Arizona and Utah. Lake Powell was formed after the completion of the Glen Canyon Dam. The dam was built to control the floodwaters of the Colorado River, to use the water as a reservoir and to make electricity. It took several years for the water to back up behind the dam. Lake Powell is now the 2nd largest man-made lake behind Lake Mead. The lake was named after John Wesley Powell, the one-armed explorer of the Southwest.

I spent over 2 hours on my journals, and then it was time to play. Jan comes by and says, “lets go find some primordial goo.” Off Jan goes. Jacob and I try to catch up. We swim around the corner of the canyon, swimming. I don’t climb the steep canyon cliffs. Then Jacob and Jan try wake boarding. I am the safety officer.

Next we have an afternoon program with two scientists for this area. Here are my notes from their presentations.

Mark Anderson, Aquatic Biologist for the Glen Canyon Recreation Area

Beach Closures in 1995-12 beach closures. This beach closures were due to high levels of bacteria according to the Fecal contamination by state standards.
NPS
-Water quality
-Education program
-Establish appropriate rules and jurisdiction, mile of shore must have portable potty
-Facility improvement
They have formed a technical advisory committee.
Beach monitoring-started in 1988, in 1995 took off under committee
-2 labs on the lake

Technical Advisory Committee
-Guide the beach-monitoring program
-Establishes standards for 2 different states-Arizona and Utah
-Determine closures and opening policy
-Determine additional research needs
-Visitor use statistics correlation
-Microbial source tracking
-Waste survey, effectiveness of waste education

Make Routine Sample sites
-All marina sites
-High use sites
-Any site that has high microbial count in last 3 years
-Routine sites sampled at least biweekly

-No beach closures in 2000.2001
-One beach closure is 2002
Now beach closures are just an occasional thing.


Lake Powell has 3 million visitors a year.


Public outreach
Public outreach is a large program for NPS. One of the programs is to prevent the Zebra mussel from reaching and infesting Lake Powell, which has a great environment for it to thrive in. Below are some of the details of the Prevention-Pest management program:
Zebra mussel prevention-pest management
Dreissena polymorpha and D. bugensis (quagga meussel)
-small invasive species
o forms thick mats
o Fills intake pipes
o Clogs
o Encrusts boats
o Clogs Engines
o Cover beach with sharp shells
o Fills air with shell decay, degrading the beach experience



Ecological damage
1. No ecologically friendly was to eradicate
2. Encrusts and kills any bottom critters, clams, and crayfish
3. Filters enormous amount of algae, disrupting the food chain
4. No natural predator of consequence
5. Accumulates toxins, biomagnifications



No natural predators

Lifecycle-float free in water,
Adult 2-3 cm across
Live 4 -5 years
Female produces 1 million eggs


History of the Invasion
From the Caspian and black seas
Took over all of Europe
Came to America in ballast water

Lake Powell
Considered the most likely point of intro to the Colorado River System
Good condition for zebra mussels
High colonization Potential

Visitor Screening
Has your vessel been used east of the Rocky mountains in the past 30 days,
Which the person gets a prevention packet
Information pamphlets
Coupon for boat washing
Map to washing facilities
Free to visitor

2001
13 potentially infested boats
9 washed

2002
25 potentially infested boast
21 washed


Main stem Limnology
-Grand Canyon monitoring and research center
-Profiles
-Nutrients, contaminants, plankton

Side Canyon Study
-USGS
-Visitor impacts on side canyons
Choose 3 popular canyons: profiles, WQ sampling, beach sediment, micro-current measurements, micro currents between side canyons and main canyons

Sediment Delta Contaminants
-USGS cooperative project
-Colorado delta and San Juan and Escalante Rivers
-Sediment coring
-Contaminant testing

Ecology
-To gauge health, monitor macro invertebrates
-Native Fish Management
-Sport Fishery Management
-Terrace monitoring
Mark_Anderson@NPS.GOV
Glen Canyon NRS-National Park Service-Aquatic Ecologist-only one position
The End


Gordon Mueller, fishery biologist
USGS
Lost, a Desert River and Its Native Fish (the name of his presentation)
By Gordon Mueller USGS-BRD (Biological Research Division)-FORT Collins

Denver, Colorado
Worked 22 years on the Colorado River
4 different agencies

-Canyonlands to Mexico border
-Lots of physical and biological changes in the last 100 years
-What’s gone is a desert river and its native fish
-1400 miles of Colorado River, often compared to the Nile
-90% of water comes from snowmelt
-Flows through the most arid regions in North America
-5 th largest river in the US
Named after red silt, Colorado is Spanish for red
-Most regulated river in the world
-One the last areas to be settled in the US

US
-Steamboat Era 1852 to 1916, bringing supplies up the Colorado River, Sea of Cortez in the Gulf of California to present site of Las Vegas, Nevada-Yuma, Arizona was a sea port-stooped by low water near Las Vegas
Colorado River Delta-probably was flowing 10,000CFS; some floods were as high as 400,000 CFS
-This shaped the fish culture
-In 1826, sailed up the Colorado River all the way up to Yuma, Colorado
-In 1539, Cortez found the mouth of the Colorado River and sailed up 200 miles
-Aldo Leopold, the Green Lagoons, in Sand County Alamanac-1922
-Native American fished with a sauk (hand made net with 2 poles) in 1909, 10-20% of their diet was fish
-Created fish traps and baited with seeds such as pumpkins
Colorado pike minnow, 100 pounds, aggressive fish
-1900 to 1935-rapid reduction in numbers. Predation and competition by nonnative fishes, exploitation by man, less by the large dams that were created.
-1935 to 2000-Gradual dying off of relic populations.
-Native fish had longevity, living up to 50 years, which was part of their strategy of survival

The first dam, Laguna Dam, to cross the Colorado-1908, isolating the fish to come up to spawn
Laguna Dam is just upstream from Yuma, Arizona


Flooding in the Colorado River areas occurred until 1935 when Hoover dam up
Boulder Dam on lake Mead
Digging of the All American Canal in the 1930’s-to provide water for the Imperial Valley
Hoover Dam-1935- and Lake Mead, then 8 other dams followed.
Hoover Dam put a spigot on the water
There is now more water in the Colorado River, 1000 times more water than before dams
700 square miles is covered by Colorado River Reservoir
By 1970, 70 nonnative species placed into the Colorado River, due to public pressure for fishing certain fishes, States like the monies brought in by the sale of fishing licenses
-Physical cycle of drought and flood had limited the number of native fish
-Only 6 times the Colorado River has only flowed into the ocean in the last 30 years
-60 miles of the end of the C River delta is dry river bed, because the Mexacali Valley, uses the river water for agriculture
-Colorado River Native Fish only 7 out 9 exist in the Colorado River
-The 7 remaining are endangered
1.Razorback sucker-only 4000 in the wild
-Lives to be 50 years old, sexually active 35 or 40 years of their life span
-so when conditions were good they would reproduce
2.Bonytail-Gila elegans
-none believed to be in the wild, only 3 were left, before interventions
3.Colorado pikeminnow
4.Humpback club
5.Wound fin
6.Desert pupfish
7.Sonoran topminnow

Most abundant in Green, San Juan River, the upper basin-the 2 that are not endangered yet
1. -Round tail chub
2. -Flannel mouth sucker

Native Fish Projects
-Augmenting existing populations
-Examine their habitat requirements
-Studying predator interactions
-Providing tools for the mangers
-Stocking risk assessment
-Providing historical perspective
-Environmental change




Repatriated Razorback Suckers

Stocking Risk Assessment
-Model based on: known movements
Habitat use
Ranges
Threat
Diversions
Dam passage


Possibility of extinction is very high.
Long-term commitment on the agencies.
Recovery of species is on the upper basin, upstream of Colorado River Basin.
Predation seems to be a tremendous problem, including removal of nonnative species.


for Tuesday, September 10
North South Both




Biographical
•
Team: South
Julie Overbaugh
Trekker Julie Overbough with Secretary Norton
A mother of two boys, 45-year-old Julie Overbaugh is a licensed registered nurse...
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•
Friday, September 27
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Thursday, September 26
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Wednesday, September 25
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Tuesday, September 24
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Monday, September 23
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Sunday, September 22
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Saturday, September 21
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Friday, September 20
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Thursday, September 19
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Wednesday, September 18
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Tuesday, September 17
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Monday, September 16
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Sunday, September 15
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-Day 47-Sunday-Death Hollow
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Saturday, September 14
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•
Friday, September 13
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Day 45- Grand Staircase Escalante
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•
Thursday, September 12
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Day 44-Climbing out of the Hole in the Rock
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•
Wednesday, September 11
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Day 43-Last day on Lake Powell
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•
Tuesday, September 10
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September 10, 2002-Day 42- Tuesday-Lake Powell
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•
Monday, September 9
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Lake Powell
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•
Sunday, September 8
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•
Saturday, September 7
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Day 39-Field Trip with Marcy De Million
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•
Friday, September 6
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Day 38-leaving Jacob Lake
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•
Wednesday, September 4
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•
Tuesday, September 3
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•
Monday, September 2
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•
Sunday, September 1
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•
Saturday, August 31
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•
Friday, August 30
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Day 31- Rapids
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Thursday, August 29
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Tuesday, August 27
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Day 28-Checkerboard day
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Monday, August 26
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Monday, August 26
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Day 27-sunrise over the Grand Canyon
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Sunday, August 25
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Day 26Leaving Flagstaff
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Saturday, August 24
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Day 25-Flagstaff
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Friday, August 23
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Day 24 - Flagstaff
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Thursday, August 22
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Day 23 - Sleep Interrupted
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Wednesday, August 21
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Day 22-Almost to Flagstaff
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Tuesday, August 20
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Tuesday-Day 21-Cow Pasture
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Monday, August 19
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Day 20 - Mountain Bike Ride
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Sunday, August 18
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Saturday, August 17
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Friday, August 16
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Thursday, August 15
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Wednesday, August 14
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Tuesday, August 13
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Day 14-ATV Riding, Leaving New Mexico
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Monday, August 12
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Sunday, August 11
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Sunday, August 11
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Saturday, August 10
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Day 11- Horse pack Trip
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Friday, August 9
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Day 10 - Horse pack Trip
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Thursday, August 8
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Day 9- Horse pack Trip
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Wednesday, August 7
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Tuesday, August 6
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Day 7-hiking to Emory Pass
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•
Monday, August 5
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Sunday, August 4
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•
Saturday, August 3
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Friday, August 2
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Thursday, August 1
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Day 2 - Horse Canyon, Steep and Rocky
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•
Wednesday, July 31
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Wednesday, July 31
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•
Tuesday, July 30
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•
Sunday, July 28
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•
Tuesday, July 23
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1st Entry
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