News Release

National Park Service Seeks Public Scoping Comments on the Expanded Non-native Aquatic Species Management Plan

A river in a high walled sandstone canyon. Birds fly over the river.
Colorado River in Glen Canyon

NPS Photo

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News Release Date: November 15, 2017

Contact: Mary Plumb, GCNRA, 928-608-6202

Contact: Kirby-Lynn Shedlowski, GCNP, 928-638-7958

UPDATE Nov 30, 2017: In response to public requests, the National Park Service is extending the scoping public comment period for the Expanded Non-native Aquatic Species Environmental Assessment from December 15, 2017, to January 5, 2018. The National Park Service is also conducting an additional open house in Phoenix the evening of December 12 (6:00 pm to 8:30 pm) at the following location:
Arizona Game and Fish Department, Quail Room
5000 W Carefree Highway
Phoenix, AZ 85086.

The National Park Service (NPS) is seeking public input on an Expanded Non-native Aquatic Species Management Plan and Environmental Assessment (EA) in Grand Canyon National Park (GCNP) and Glen Canyon National Recreation Area (GCNRA) below the Glen Canyon Dam. Public scoping will be held for a 30-day period from November 15 to December 14.

Control measures for expanded non-native aquatic species are needed due to the increase of green sunfish, brown trout and the potential for other harmful non-native aquatic species that threaten downstream native and listed threatened and endangered aquatic species. These non-native species have become an increasing threat from changing conditions since the completion of the 2013 NPS Comprehensive Fish Management Plan (CFMP) and the 2016 Long-Term Experimental and Management Plan (LTEMP).

To assist the public in understanding the proposed action and providing comments, the NPS is hosting various meetings to present information on the plan. Those meetings include:

Public Webinar:

6 to 8 pm, November 28
Call Line 888-946-2716, Passcode 5935870


Open Houses:

6 to 8:30 pm, December 6

GCNRA Headquarters, 691 Scenic View Drive, Page AZ

6 to 8:30 pm, December 7

Flagstaff Aquaplex, 1702 N. Fourth Street, Flagstaff AZ

6:00 pm to 8:30 pm, December 12
Arizona Game and Fish Department, Quail Room, 5000 W Carefree Highway, Phoenix AZ


The scoping open houses will include a presentation, and NPS staff will be available to answer questions. Comments will be particularly useful that address the proposed action, environmental issues that should be addressed, potential alternatives, and sources of data that should be considered.

The project summary and associated documents can be found online at:

Scoping serves as an opportunity to engage the public early in the planning process as the NPS develops the range of alternatives for the Environmental Assessment (EA). Once the EA is complete, the NPS will offer another public comment period.

Public scoping comments may be submitted electronically at: (preferred method). Written comments will be accepted at the public scoping open houses (computers or note cards will be available). Written comments may also be submitted to:
ATTN: Kirk LaGory
Expanded Non-native Aquatic Species Management Plan 
Argonne National Laboratory
9700 South Cass Avenue—EVS/240
Argonne, Illinois 60439

Comments will not be accepted verbally or by fax, email, or in any way other than those specified above. Bulk comments in any format (hard copy or electronic) submitted on behalf of others will not be accepted. Public scoping comments should be submitted no later than December 14, 2017. 

Public Scoping Webinar and Open Houses

November 28, 2017, 6:00-8:00 pm

Public Webinar

Phone: 888-946-2716, Passcode: 5935870

Join as guest (enter name), Select “screen share only” at bottom. DO NOT choose “computer” or “phone”

December 6, 2017, 6:00-8:30 pm

Public Open House

Glen Canyon Headquarters

691 Scenic View Drive

Page, AZ 86040


December 7, 2017, 6:00-8:30 pm MST

Public Open House

The Flagstaff Aquaplex

1702 N Fourth St

Flagstaff, AZ 86004



More information is available on each park’s website: Glen Canyon National Recreation Area or Grand Canyon National Park.

Last updated: December 1, 2017

Contact the Park

Mailing Address:

PO Box 1507
Page, AZ 86040


(928) 608-6200
Receptionist available at Glen Canyon Headquarters from 7 am to 4 pm MST, Monday through Friday. The phone is not monitored when the building is closed.

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