National Funds to Support Greenback Recovery in CO

JANUARY 4, 2018 – The National Fish and Wildlife Foundation (NFWF) has recently announced their slate of awardees for the competitive Bring Back the Natives Grant (BBN)– a program that will provide $1 million in grants to support habitat restoration and other on-the-ground projects that advance recovery goals of native fish throughout the United States in 2018-19. A partnership between NFWF, the U.S. Forest Service, U.S. Fish and Wildlife Service, Bureau of Land Management, Bass Pro Shops and the Brunswick Public Foundation, “Bring Back the Natives represents the benefits of coordinated efforts between private landowners and federal agencies to improve the health of watersheds,” said Jeff Trandahl, executive director and CEO, NFWF.

As one of the 15 grant recipients, Colorado Parks and Wildlife (CPW) will receive $60,000 to support the design and construction of a critical temporary fish barrier on Cornelius Creek.  Located in the US Forest Service Canyon Lakes Ranger District (USFS-CLRD), the George and Cornelius Creek drainage is one of the most significant Greenback Cutthroat recovery sites to date.

The Greenback cutthroat trout is currently listed as “Threatened” under the Endangered Species Act, and is believed to have been endemic to coldwater streams and lakes of the South Platte River Basin. Once a thriving species, the Greenback has suffered significant impacts from human development, competition from non-native fish, and the introduction of whirling disease.  Once thought to be extinct, the native trout is making a comeback thanks to a coalition of state and federal agencies, non-profits, private landowners, and public volunteers.

The George and Cornelius Creek watershed has been identified as a high priority for establishing a robust Greenback cutthroat trout metapopulation. Due to its relatively low elevation compared to that of many other streams in the basin where cutthroat trout reintroduction may be feasible, these creeks feature thermal conditions that fall within an optimal range for cutthroat trout recruitment. Additionally, these streams are already managed for a Greenback cutthroat trout recovery population with regard to the Endangered Species Act, Section 7.

Due to the complexity of the habitat within the drainage, Colorado Parks and Wildlife and the US Forest Service will take on the project in stages.  With the presence of both whirling disease (WD) and non-native fish in the area, biologists will build three temporary barriers that will segment the two tributaries and allow for effective treatment over the next few years.  Once the streams have been cleared of WD and non-native competitors, the Greenbacks will be introduced.  This process is expected to take several years.

The desired outcome of the entire multi-phase project is successful establishment of a self-sustaining Greenback cutthroat trout population in 14 miles of connected habitat. At this writing, Greenbacks only occur in the wild in four waters, three of which are the result of recent introductions.

The Greenback Cutthroat Trout Recovery Plan (US Fish & Wildlife Service 1998), although in the early stages of being updated, calls for—among several other requirements—stable Greenback populations in at least 31 stream miles in order for the species to be considered for de-listing. Currently, there are no stream populations in the South Platte Basin that meet the Recovery Plan’s criteria for “stable conservation populations.” Therefore, the importance of the George and Cornelius Creek Project, which is slated to create up to 14 miles of such habitat, cannot be overstated.

The Cornelius Creek barrier is essential to the overall success of the project by enabling CPW biologists to treat the upper section of the creek while concurrent restoration work is being completed in the other units.  With the funding provided by the NFWF Bring Back the Natives Grant, CPW will now have the resources necessary to move forward in this critical recovery effort and secure a large drainage for the Greenback.

Note: Due to various treatment protocols for Whirling Disease (which has been found in the area), the entire project will likely be completed near 2026.  The barriers will be in place by the end of 2019.  For more information, please contact Dan Omasta, CTU Grassroots Coordinator (domasta@tu.org).

For more information on the NFWF BBN Grant and other recipients, Click Here.

Backpacking for Greenbacks

By Dan Omasta(All photos courtesy of Helen H. Richardson/The Denver Post)

It was turning out to be another beautiful July day in Colorado, as over 50 staff and volunteers from Trout Unlimited, Colorado Parks and Wildlife (CPW) and various other government agencies and NGOs filed into the big dirt parking lot at the trailhead of Herman Gulch, just off I-70 west of Denver near Silver Plume.

Excitement was palpable, and everyone was ready to strap on their boots to help make a big difference for a small native trout—the greenback cutthroat.

The greenback, once believed to be extinct, is making a comeback in Colorado. Thanks to the efforts of state and federal agencies, NGOs and community volunteers, this threatened species is getting the boost it needs to return to its native range in the South Platte basin. In 2012, genetic scientists at the University of Colorado discovered a handful of the once-prolific trout in a small creek just outside of Colorado Springs. Since then, biologists from CPW, the U.S. Forest Service and U.S. Fish and Wildlife, with boots-on-ground assistance from Trout Unlimited, have been collaborating to rebuild critical population strongholds along the Front Range.

Repopulating Herman Gulch with greenbacks is a big step in that effort.

As the hatchery trucks arrived with their big tanks full of eager (and presumably confused) fish, we all gathered behind the tailgate of a CPW truck and received instructions for transporting and releasing our native cargo. Then we separated into five groups that corresponded to certain distances along the trail: group five, for instance, would be hiking the full 3.5 miles above treeline, while group one would begin releasing fish in a particular stretch only a mile into the trek.

Everyone was excited as we lined up to get outfitted with our fish packs. Each TU volunteer and agency staff person would be carrying 15-20 yearlings (4-7 inches long) up the steep rocky trail into the remote, high-alpine headwaters.

The first mile of the hike was brutal--steep switchbacks made up the bulk of the first two hours of climbing. The whole experience felt like a Tough Mudderrace combined with community conservation. The fish only had a few hours of oxygen in the bags, so volunteers slated to reach the highest stretches of stream moved quickly up the rocky, wooded path. Teams of fish packers often leap-frogged one another and received words of encouragement on the steady climb upward: “Almost there,” “It’s just around the corner,” “Sure, that’s what you said an hour ago!”

The hike was full of sweat, laughter and camaraderie as the group worked together to help establish this new population of native fish.

We had received instructions about where to release the fish along the small stream. Once our group reached our ¾ mile reach, we started looking for good habitat to release the fry. Volunteers split off from the group as they followed the sound of riffles and changes in gradient that suggested that on the other side of those willows would be a perfect eddy for these hungry, native trout.

At one bend, I unshouldered the pack and gently opened it along the bank. I set the bag of eager yearlings into the water to help them acclimate to the cold water—a process similar to bringing home that goldfish from the pet shop. About 15 minutes later, the fish were ready. As I poured the precious contents into the stream, the small greenbacks—maybe a dozen of them— swam eagerly out of the bag and into their new home in the clear, deep eddy by the undercut bank.

At first, they clumped together, seemingly unsure about where to go or hide in the cold, clear water. Then, a few of them finned into the current and began rising to the small mayfly hatch coming off the surface. These fish were raised in captivity, but generations of native instinct seemed to kick in almost immediately.

Repopulating a high alpine stream with fish that have never had to survive in such a harsh landscape continues to pose challenges. While these trout have done well in areas such as Zimmerman Lake, they must learn quickly the survival traits necessary to overcome runoff, ice flows and changing food patterns if they are going to stand a chance here. If this introduction is successful and the fish overwinter, Herman Gulch will become one of the first major streams to hold a significant population of pure greenback cutthroats.

This was a major undertaking and could not have been done without the dedication and resources of CPW biologists and hatchery technicians, federal agencies, NGOs and community volunteers. At the end of the day, our group helped to release 960 native greenbacks into Herman Gulch.

For me, the project also provided a shining example of teamwork and collaboration to counter the ongoing bitter partisanship and gridlock that has plagued our nation for years now. There we all were at 10,000 feet—families, retired nurses, young professionals, hunters, anglers, Democrats, Republicans, veterans and CEOs—all strapping on our hiking boots and working together to restore the greenback.

It was a good reminder of what can be accomplished when we work together.

For more information on greenback cutthroat trout recovery efforts, visit www.Coloradotu.org, or contact Dan Omasta, Colorado Trout Unlimited grassroots coordinator, at domasta@tu.org.

Greenback Spawning at Zimmerman Lake - Success!

FORT COLLINS, CO – It was still dark out when I threw the thermos of coffee into the truck and left Denver for the Zimmerman Lake Trailhead just east of Cameron Pass.  The goal for the day was to join two other fellow TU volunteers and work alongside Colorado Parks and Wildlife (CPW) biologists to help with Greenback Cutthroat spawning at the pristine high alpine lake. Since 2013, CPW and Colorado Trout Unlimited have worked together to establish a population of Greenback broodstock up at Zimmerman Lake that can be used to help populate other streams throughout the cutthroat’s native range.  The recent spawning project took place over four days and engaged a handful of CPW staff along with eight CTU volunteers from various Front Range Chapters.

The spawning process was pretty straightforward and designed by CPW staff to expand the genetic pool of Greenback Cutthroat Trout.  The pictures below highlight much of the process that took place over the four days.  A big THANK YOU to all the volunteers who came out to support this important recovery effort!

CPW set up at the Zimmerman Lake inlet to capture spawning Greenbacks.

Fish were collected with a large net and put into a pen to be sorted and categorized by CPW staff and volunteers.

Fish were sorted based on their gender and stocking year.

RFID chips in the fish help to identify the stocking year and other critical data.

After the fish were sorted, CPW milked the males and females - making targeted genetic crosses among the various lineages to expand the genetic diversity.  The eggs and sperm were combined in bowls, packed into small coolers, put on ice, and shipped to the local fish hatchery in Leadville, CO for breeding.

This process is a critical step in the long-term recovery of the native Greenback Cutthroat Trout.  CTU is proud of the great work that its volunteers provided during these long days up at the lake.  The work undertaken at Zimmerman will help ensure that future fishermen and women are able to chase these rare fish throughout the Front Range for decades to come.

For more information on the project or to get involved with other upcoming Greenback recovery projects, contact Dan Omasta, CTU Grassroots Coordinator (domasta@tu.org).

Greenback Recovery Working Group

The greenback cutthroat is one of last three remaining species of cutthroat trout that is native to Colorado. Their populations were decimated during the initial settling of the west, and for a period of time this species was thought to have become extinct. Later, greenback cutthroats were believed to have been rediscovered, but this proved to be case of mistaken identity. Genetic testing later provided evidence that this “old Strain” of greenback cutthroats were in fact Colorado Cutthroats, an entirely different subspecies of cutthroat trout. It wasn’t until later that a small population of true native greenback cutthroat were discovered in Bear Creek near Colorado Springs. Since this discovery there has been a significant effort to capture the genetic pool of these true greenback cutthroats, breed them in controlled environments, and repopulate native waters with these trout. Much of this work is thanks to the Greenback Recovery working group, currently lead by Colorado TU Grassroots Coordinator, Dan Omasta. This working group is a collaborative effort; including organizations such as Trout Unlimited, the Division of Fish and Wildlife, the Forest Service, and front range CTU chapters. This partnership forms a unified front to work as a single point of contact. The Greenback Recovery Working Group has been effective because they are able to provide much needed volunteers, address funding needs, enhance communications, and work on grant writing across chapters as a single entity.

One of the most significant ongoing projects is the reintroduction of native greenback cutthroat trout to Zimmerman Lake. This lake serves as a spawning ground for these cutthroat, where fertilized eggs are then collected and brought to the Leadville hatchery. The resulting fry are then reintroduced to other native streams.

Another substantial project conducted by the Greenback Recovery Working Group in partnership with Western Native Trout Initiative entails installing 30 temperature loggers into local streams. This project will help Colorado Trout Unlimited collect data in order to evaluate streams for reintroduction, monitor progress, and over time measure the impacts of climate change. There are many other ongoing and upcoming projects that the Greenback Recovery Working Group is tirelessly working on in order to successfully reintroduce native greenback cutthroat trout.

Soon under the Endangered Species Act, the Department of Fish and Wildlife will be forced to review the status of greenback cutthroats. Currently greenback cutthroat trout are listed as a threatened species, but if they are downgraded to an Endangered species there could be significant consequences. It would take significantly more time and money to acquire permitting and conduct environmental impact assessments.  Additionally, if this species becomes endangered, it may no longer be targeted by anglers. This may provide disincentives to protecting this native cutthroat species and limit fishing areas across Colorado. This would hinder one of the most substantial trout recovery efforts even undertaken in Colorado, but with proper funding and volunteers the Greenback Recovery Working Group should continue to successfully reintroduce this cutthroat species thought to have been lost.

To get involved or volunteer please contact Dan Omasta, DOmasta@tu.org, to learn about various opportunities!