Boulder Creek back in pre-2013 stream channel #ActOnClimate

The City of Boulder’s Open Space and Mountain Parks Department (OSMP) has begun a major restoration project that will improve native fish habitat in Boulder Creek and restore natural areas surrounding the creek. This ecological project also will repair damage from the 2013 floods by returning Boulder Creek to its pre-flood channel, and will include the planting of more than 11,000 native trees and shrubs. These plantings will help improve the creek’s sustainability and resiliency, and help mitigate damage to private and public property during future floods. These efforts are occurring in two areas east of Boulder. Photo credit the City of Boulder.

Here’s a report from Charlie Brennan writing in The Boulder Daily Camera. Click through for the whole article and the photos. Here’s an excerpt:

“We are at a very significant milestone,” said Giolitto, who managed the project along with her supervisor, Don D’Amico. “The creek’s flowing back through its pre-flood path. That’s a significant milestone for us. The diversion was pretty significant. We were pretty excited on the construction crew when it happened, when we finally put the creek back.”

There was no Champagne uncorked as that benchmark was achieved several weeks back. But there was great satisfaction for those who have labored since the spring of 2014 to reverse the havoc that saw the creekbed breached, city and private funds inundated by rogue waters and sediment plugs created that impeded an effective flow in a critical drainage.

“The other reason this is a milestone, again, (is) getting the creek to convey its flow, both water and sediment. Getting the earthwork done puts the creek in a place where it can actually convey its sediment,” Giolitto said. “Which is a really important piece to getting it back to creating more resiliency.”

The project involved the contributions of more than 100 city staff, contractors, volunteers and private landowners, and ran to a final tab of $2,030,000. Roughly 25 percent of that was covered by partners that included the Colorado Water Conservation Board, the U.S. Fish and Wildlife Service, Colorado Parks and Wildlife, Environment for the Americas and the Green Ditch Company.

Boulder OSMP spokesman Phillip Yates said the city leveraged $520,000 in grants to help pay for the project, putting the city’s actual cost at $1,510,000.

Primary contractors have been North State Environmental and Left Hand Excavating, with Five Smooth Stones Restoration and Stantec providing project design work. Support has also come in the form of labor provided through the Bridge House Ready To Work program.

Finish line in sight

The project, which will involve continued management efforts for at least a couple of years going forward, has included the planting of more than 11,000 shrubs and native trees — yes to the plains cottonwood, thumbs down to the non-native crack willow — improving the native fish habitat and restoring natural areas surrounding the creek.

The project area is transected by 61st Avenue, but does not include a popular public pathway that would put it squarely in the public eye in the way that efforts at popular trail systems such as those at Chautauqua and Mount Sanitas are so visible.

“People might see the impacts of the flood as specifically a very trails-oriented impact,” Yates said. “However, there was pretty extensive damage all across the system. There were water delivery systems that we needed to fix. There was agricultural infrastructure we needed to fix. Then, there were a lot of riparian corridors that were scoured. And then we had to go back and take some steps to have some restoration efforts to then actually make those areas better.”

City restoration projects elsewhere, on trails such as Shadow Canyon South, as well as Mesa Trail, are ongoing, Yates said.

“But right now we’re nearing the finish line,” he said. “And having this (Boulder Creek project) completed is so gratifying, to see that this work is now coming to fruition and we have an ability to look and maybe see the horizon on completing our flood-recovery work.”

The enterprise along Boulder Creek has highlighted the symbiotic approach to land management that the city has strived to employ.

For example, the project repurposed hazard trees that had to be taken down elsewhere in the city, using them for Boulder Creek bank protection and to cover over pools to improve fish habitat.

“Those have been great ways to reuse materials and partner with other people and other departments” in the city, Giolitto.

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