Bank Swallow habitat is very specific. Bank Swallows nest every year at Roger’s Grove Natural Area in Longmont and this nest site may be destroyed by future flood mitigation work unless an effort is made to protect it.

July Nature Almanac_ Bank swallows pose an ingenious paradox – Boulder Daily Camera
Northeastern Naturalist Vol. 16, No. 4 (2009), pp. 519-534 (16 pages) Published By: Eagle Hill Institute Northeastern Naturalist
Room to Roam: How Animals Benefit From Wildlife Corridors by Tara Lohan. Published in the Revelator on 3/6/19.
A tenacious bald eagle in Frederick illustrates wildlife’s fight to survive along Colorado’s increasingly developed Front Range: More than enforcement of laws, officials say local decision-making will determine future of habitat and wildlife by Bruce Finley, Denver Post. Published 3/10/19.
thumbnail of Ruling the roost – Boulder Weekly
Ruling the Roost Boulder Weekly article Feb. 21, 2019
Published in the Times Call on June 6, 2017.
Nick Wolfrum’s guest editorial in the June 26, 2017 Times Call.
Letter to the Editor published in the Times Call on July 7, 2017.

Richard Cargill: Mining the St. Vrain Valley enhances flood risk

POSTED:   09/01/2017 09:11:32 AM MDT

UPDATED:   09/01/2017 09:15:07 AM MDT

Flooding in the St. Vrain Valley is a natural phenomenon that has been occurring for tens of thousands of years.

I witnessed the flood of 2013 from my home across the valley on Hygiene Road. I heard the roar of the river and watched it destroy ponds that were left from mining. Near 61st and Hygiene Road, the river jumped its track, destroying more mining ponds, and it swept that water east with great force. When the water breached the mining ponds at Pella Crossing, there was a massive swell of water and debris crashing into unsuspecting neighborhoods in Longmont.

The 2014 St.Vrain Creek Watershed Master Plan states, “During the flood, large split flow paths cascaded through the reclaimed gravel mining ponds. One split channel resulted in flooding outside of the 100-year floodplain and affected neighborhoods downstream in the City of Longmont. … Although the adjacent floodplain has been historically connected to the channel, sand and gravel mining operations have altered the natural floodplain function for a majority of this reach.”

If you go to Pella Crossing, 61st or Hygiene Road, you can see how the power of the floodwater blew out the mining ponds, adding to the catastrophe. The devastation is evidence of the knowledge that mining ponds should not be on a floodplain.

But, Martin Marietta Materials intends to mine between Hygiene Road and Colo. 66. Mining will leave behind even more mining ponds. Shouldn’t the valley’s floodplain be left alone? The valley is appropriate for open space, recreation and agriculture.

Make your voice heard. Email, and Eric Lane, director of Parks and Open Space, Ask them to say no to Martin Marietta Materials’ intention to mine more than 400 acres in the St. Vrain floodplain. Together we can help avert future flooding in Longmont.

Richard Cargill

Boulder County

Letter to the Editor published in the Times Call on September 1, 2017.

Front page Times Call article on August 29, 2018.

Published on September 13, 2018 in the Times Call.
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