Browns Canyon National Monument Proposed Resource Management Plan / Final Environmental Impact Statement
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Aerial Survey Highlights for Colorado 2014
Aerial Survey Highlights for Colorado 2014 Aerial detection surveys of tree killing or damaging insects and diseases are conducted annually over Colorado’s forest lands. This is a cooperative effort between the US Forest Service and the Colorado State Forest Service. In 2014, 28 million acres were surveyed by 7 trained federal and state surveyors. Highlights of the survey by damage agent are reported below. In 2014, all reported agents are insects that kill and/or defoliate trees. This report includes only forest damage that is visible from the air. Spruce Beetle • Since 1996, spruce beetle has affected approximately 1,397,000 acres to varying degrees in Colorado. • Spruce beetle activity was detected on 485,000 acres in Colorado in 2014. Of these, 253,000 acres are in areas not previously mapped as having spruce beetle activity (new acres). This epidemic continues to expand rapidly (Figures 1, 2). In some areas, the outbreak has moved through entire drainages in the course of one year. In the most heavily impacted drainages, nearly every mature spruce has been killed (Figure 3). • The spruce beetle epidemic is expanding most rapidly in southern Colorado’s Forests and impacts many thousands of acres. Areas affected are found from the La Garita Wilderness Area to north of Cottonwood Pass, the Sangre de Cristo and Wet Mountains, as well as south to the Colorado border and into New Mexico. Aerial survey in south central Colorado showed spruce beetle epidemics expanded on the San Juan (26,000 new acres on 53,000 active acres), Rio Grande (78,000 new acres on 192,000 active acres), Gunnison (54,000 new acres on 79,000 active acres), and San Isabel (26,000 new acres on 31,000 active acres) National Forests. -
Denudation History and Internal Structure of the Front Range and Wet Mountains, Colorado, Based on Apatite-Fission-Track Thermoc
NEW MEXICO BUREAU OF GEOLOGY & MINERAL RESOURCES, BULLETIN 160, 2004 41 Denudation history and internal structure of the Front Range and Wet Mountains, Colorado, based on apatitefissiontrack thermochronology 1 2 1Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology, Socorro, NM 87801Shari A. Kelley and Charles E. Chapin 2New Mexico Bureau of Geology and Mineral Resources, New Mexico Institute of Mining and Technology, Socorro, NM 87801 Abstract An apatite fissiontrack (AFT) partial annealing zone (PAZ) that developed during Late Cretaceous time provides a structural datum for addressing questions concerning the timing and magnitude of denudation, as well as the structural style of Laramide deformation, in the Front Range and Wet Mountains of Colorado. AFT cooling ages are also used to estimate the magnitude and sense of dis placement across faults and to differentiate between exhumation and faultgenerated topography. AFT ages at low elevationX along the eastern margin of the southern Front Range between Golden and Colorado Springs are from 100 to 270 Ma, and the mean track lengths are short (10–12.5 µm). Old AFT ages (> 100 Ma) are also found along the western margin of the Front Range along the Elkhorn thrust fault. In contrast AFT ages of 45–75 Ma and relatively long mean track lengths (12.5–14 µm) are common in the interior of the range. The AFT ages generally decrease across northwesttrending faults toward the center of the range. The base of a fossil PAZ, which separates AFT cooling ages of 45– 70 Ma at low elevations from AFT ages > 100 Ma at higher elevations, is exposed on the south side of Pikes Peak, on Mt. -
Spanish Peaks Wilderness
Mt. Bierstadt Field Trip Trip date: 6/17/2006 Ralph Swain, USFS R2 Wilderness Program Manager Observations: 1). The parking lot was nearly full (approximately 35 + vehicles) at 8:00 am on a Saturday morning. I observed better-than-average compliance with the dog on leash regulation. Perhaps this was due to my Forest Service truck being at the entrance to the parking lot and the two green Forest Service trucks (Dan and Tom) in the lot! 2). District Ranger Dan Lovato informed us of the District’s intent to only allow 40 vehicles in the lower parking lot. Additional vehicles will have to drive to the upper parking lot. This was new information for me and I’m currently checking in with Steve Priest of the South Platte Ranger District to learn more about the parking situation at Mt. Bierstadt. 3). I observed users of all types and abilities hiking the 14er. Some runners, 14 parties with dogs (of which 10 were in compliance with the dog-leash regulation), and a new- born baby being carried to the top by mom and dad (that’s a first for me)! Management Issues: 1). Capacity issue: I counted 107 people on the hike, including our group of 14 people. The main issue for Mt. Bierstadt, being a 14er hike in a congressionally designated wilderness, is a social issue of how many people are appropriate? Thinking back to Dr. Cordell’s opening Forum discuss on demographic trends and the growth coming to the west, including front-range Denver, the use on Mt. -
Geochronology Database for Central Colorado
Geochronology Database for Central Colorado Data Series 489 U.S. Department of the Interior U.S. Geological Survey Geochronology Database for Central Colorado By T.L. Klein, K.V. Evans, and E.H. DeWitt Data Series 489 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior KEN SALAZAR, Secretary U.S. Geological Survey Marcia K. McNutt, Director U.S. Geological Survey, Reston, Virginia: 2010 For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment, visit http://www.usgs.gov or call 1-888-ASK-USGS For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprod To order this and other USGS information products, visit http://store.usgs.gov Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report. Suggested citation: T.L. Klein, K.V. Evans, and E.H. DeWitt, 2009, Geochronology database for central Colorado: U.S. Geological Survey Data Series 489, 13 p. iii Contents Abstract ...........................................................................................................................................................1 Introduction.....................................................................................................................................................1 -
A Natural Resource Condition Assessment for Rocky Mountain National Park
National Park Service U.S. Department of the Interior Natural Resource Program Center A Natural Resource Condition Assessment for Rocky Mountain National Park Natural Resource Report NPS/NRPC/WRD/NRR—2010/228 ON THE COVER Rocky Mountain National Park Photograph by: Billy Schweiger A Natural Resource Condition Assessment for Rocky Mountain National Park Natural Resource Report NPS/NRPC/WRD/NRR—2010/228 David M. Theobald1,2 Jill S. Baron2,3 Peter Newman1 Barry Noon4 John B. Norman III1,2 Ian Leinwand1 Sophia E. Linn1 Richard Sherer4 Katherine E. Williams2,5 Melannie Hartman2 1Department of Human Dimensions of Natural Resources, Colorado State University, Fort Collins, CO 80523-1480 2Natural Resource Ecology Lab, Colorado State University, Fort Collins, CO 80523-1499 3U.S. Geological Survey, Fort Collins, CO 80523 4Department of Fish, Wildlife, and Conservation Biology, Colorado State University, Fort Collins, CO 80523-1474 5Current address: Department of Biology, University of Wyoming, Laramie, WY 82071 This report was prepared under Task Order J2380060103 (Cooperative Agreement #H1200040001) July 2010 U.S. Department of the Interior National Park Service Natural Resource Program Center Fort Collins, Colorado The Natural Resource Publication series addresses natural resource topics that are of interest and applicability to a broad readership in the National Park Service and to others in the management of natural resources, including the scientific community, the public, and the NPS conservation and environmental constituencies. Manuscripts are peer-reviewed to ensure that the information is scientifically credible, technically accurate, appropriately written for the intended audience, and is designed and published in a professional manner. Natural Resource Reports are the designated medium for disseminating high priority, current natural resource management information with managerial application. -
COLORADO CONTINENTAL DIVIDE TRAIL COALITION VISIT COLORADO! Day & Overnight Hikes on the Continental Divide Trail
CONTINENTAL DIVIDE NATIONAL SCENIC TRAIL DAY & OVERNIGHT HIKES: COLORADO CONTINENTAL DIVIDE TRAIL COALITION VISIT COLORADO! Day & Overnight Hikes on the Continental Divide Trail THE CENTENNIAL STATE The Colorado Rockies are the quintessential CDT experience! The CDT traverses 800 miles of these majestic and challenging peaks dotted with abandoned homesteads and ghost towns, and crosses the ancestral lands of the Ute, Eastern Shoshone, and Cheyenne peoples. The CDT winds through some of Colorado’s most incredible landscapes: the spectacular alpine tundra of the South San Juan, Weminuche, and La Garita Wildernesses where the CDT remains at or above 11,000 feet for nearly 70 miles; remnants of the late 1800’s ghost town of Hancock that served the Alpine Tunnel; the awe-inspiring Collegiate Peaks near Leadville, the highest incorporated city in America; geologic oddities like The Window, Knife Edge, and Devil’s Thumb; the towering 14,270 foot Grays Peak – the highest point on the CDT; Rocky Mountain National Park with its rugged snow-capped skyline; the remote Never Summer Wilderness; and the broad valleys and numerous glacial lakes and cirques of the Mount Zirkel Wilderness. You might also encounter moose, mountain goats, bighorn sheep, marmots, and pika on the CDT in Colorado. In this guide, you’ll find Colorado’s best day and overnight hikes on the CDT, organized south to north. ELEVATION: The average elevation of the CDT in Colorado is 10,978 ft, and all of the hikes listed in this guide begin at elevations above 8,000 ft. Remember to bring plenty of water, sun protection, and extra food, and know that a hike at elevation will likely be more challenging than the same distance hike at sea level. -
Code of Colorado Regulations
DEPARTMENT OF NATURAL RESOURCES Division of Wildlife CHAPTER 0 – GENERAL PROVISIONS 2 CCR 406-0 [Editor’s Notes follow the text of the rules at the end of this CCR Document.] ARTICLE I – DEFINITIONS [Eff. 03/02/2009] #000 – The following definitions supplement the statutory definitions found in the Wildlife Act including, but not limited to, those definitions found in section 33-1-102, C.R.S. A. General Definitions Including Manner of Take Definitions 1. "Aggregate" when applied to bag and possession limits, means the total number of species which are covered by such bag and possession limits. Any combination of the species may be possessed up to the total number established as the aggregate bag and possession limits. 2. "Archery" means the use of a hand-held bow. 3. "Bag Limit" means the maximum number of wildlife which may be taken in a single day during an established open season. This includes any wildlife which are consumed or donated during the same day they were legally taken. The terms "bag limit," "daily bag" and "bag" are considered to have the same meaning. 4. "Baiting" means the placing, exposing, depositing, distributing, or scattering of any salt, mineral, grain, or other feed so as to constitute a lure, attraction or enticement for wildlife. 5. "Crossbow" means a bow which is attached at a right angle to a stock with a mechanical mechanism for holding the bow string in a cocked position and fired from the shoulder. 6. “Feral Hog” means any species or hybrid of species from the family Suidae (European boar, Eurasian boar, Russian boar, feral hog) or the family Tayassuidae (Javelina and peccary), which possesses one or more morphological characteristic distinguishing it from domestic swine including, but not limited to, an elongated snout, visible tusks, muscular shoulders with small hams and short loins, coarse hair, or a predominant ridge of hair along its back. -
Profiles of Colorado Roadless Areas
PROFILES OF COLORADO ROADLESS AREAS Prepared by the USDA Forest Service, Rocky Mountain Region July 23, 2008 INTENTIONALLY LEFT BLANK 2 3 TABLE OF CONTENTS ARAPAHO-ROOSEVELT NATIONAL FOREST ......................................................................................................10 Bard Creek (23,000 acres) .......................................................................................................................................10 Byers Peak (10,200 acres)........................................................................................................................................12 Cache la Poudre Adjacent Area (3,200 acres)..........................................................................................................13 Cherokee Park (7,600 acres) ....................................................................................................................................14 Comanche Peak Adjacent Areas A - H (45,200 acres).............................................................................................15 Copper Mountain (13,500 acres) .............................................................................................................................19 Crosier Mountain (7,200 acres) ...............................................................................................................................20 Gold Run (6,600 acres) ............................................................................................................................................21 -
Grand Mesa, Uncompahgre, and Gunnison National Forests DRAFT Wilderness Evaluation Report August 2018
United States Department of Agriculture Forest Service Grand Mesa, Uncompahgre, and Gunnison National Forests DRAFT Wilderness Evaluation Report August 2018 Designated in the original Wilderness Act of 1964, the Maroon Bells-Snowmass Wilderness covers more than 183,000 acres spanning the Gunnison and White River National Forests. In accordance with Federal civil rights law and U.S. Department of Agriculture (USDA) civil rights regulations and policies, the USDA, its Agencies, offices, and employees, and institutions participating in or administering USDA programs are prohibited from discriminating based on race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, family/parental status, income derived from a public assistance program, political beliefs, or reprisal or retaliation for prior civil rights activity, in any program or activity conducted or funded by USDA (not all bases apply to all programs). Remedies and complaint filing deadlines vary by program or incident. Persons with disabilities who require alternative means of communication for program information (e.g., Braille, large print, audiotape, American Sign Language, etc.) should contact the responsible Agency or USDA’s TARGET Center at (202) 720-2600 (voice and TTY) or contact USDA through the Federal Relay Service at (800) 877-8339. Additionally, program information may be made available in languages other than English. To file a program discrimination complaint, complete the USDA Program Discrimination Complaint Form, AD-3027, found online at http://www.ascr.usda.gov/complaint_filing_cust.html and at any USDA office or write a letter addressed to USDA and provide in the letter all of the information requested in the form. -
Draft Small Vessel General Permit
ILLINOIS DEPARTMENT OF NATURAL RESOURCES, COASTAL MANAGEMENT PROGRAM PUBLIC NOTICE The United States Environmental Protection Agency, Region 5, 77 W. Jackson Boulevard, Chicago, Illinois has requested a determination from the Illinois Department of Natural Resources if their Vessel General Permit (VGP) and Small Vessel General Permit (sVGP) are consistent with the enforceable policies of the Illinois Coastal Management Program (ICMP). VGP regulates discharges incidental to the normal operation of commercial vessels and non-recreational vessels greater than or equal to 79 ft. in length. sVGP regulates discharges incidental to the normal operation of commercial vessels and non- recreational vessels less than 79 ft. in length. VGP and sVGP can be viewed in their entirety at the ICMP web site http://www.dnr.illinois.gov/cmp/Pages/CMPFederalConsistencyRegister.aspx Inquiries concerning this request may be directed to Jim Casey of the Department’s Chicago Office at (312) 793-5947 or [email protected]. You are invited to send written comments regarding this consistency request to the Michael A. Bilandic Building, 160 N. LaSalle Street, Suite S-703, Chicago, Illinois 60601. All comments claiming the proposed actions would not meet federal consistency must cite the state law or laws and how they would be violated. All comments must be received by July 19, 2012. Proposed Small Vessel General Permit (sVGP) United States Environmental Protection Agency (EPA) National Pollutant Discharge Elimination System (NPDES) SMALL VESSEL GENERAL PERMIT FOR DISCHARGES INCIDENTAL TO THE NORMAL OPERATION OF VESSELS LESS THAN 79 FEET (sVGP) AUTHORIZATION TO DISCHARGE UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provisions of the Clean Water Act, as amended (33 U.S.C. -
Isotopic Age Determinations, Unaltered and Hydrothermally Altered Igneous Rocks, North-Central Colorado Mineral Belt A.A
Isotopic age determinations, unaltered and hydrothermally altered igneous rocks, north-central Colorado mineral belt A.A. Bookstrom, C.W. Naeser, and J.R. Shannon Isochron/West, Bulletin of Isotopic Geochronology, v. 49, pp. 13-20 Downloaded from: https://geoinfo.nmt.edu/publications/periodicals/isochronwest/home.cfml?Issue=49 Isochron/West was published at irregular intervals from 1971 to 1996. The journal was patterned after the journal Radiocarbon and covered isotopic age-dating (except carbon-14) on rocks and minerals from the Western Hemisphere. Initially, the geographic scope of papers was restricted to the western half of the United States, but was later expanded. The journal was sponsored and staffed by the New Mexico Bureau of Mines (now Geology) & Mineral Resources and the Nevada Bureau of Mines & Geology. All back-issue papers are available for free: https://geoinfo.nmt.edu/publications/periodicals/isochronwest This page is intentionally left blank to maintain order of facing pages. 13 ISOTOPIC AGE DETERMINATIONS, UNALTERED AND HYDROTHERMALLY ALTERED IGNEOUS ROCKS, NORTH-CENTRAL COLORADO MINERAL BELT ARTHUR A. BOOKSTROM 1805 Glen Ayr Dr., Lakewood, CO 80215 CHARLES W. NAESER U.S. Geological Survey, Denver, CO 80225 JAMES R. SHANNON Department of Geology, Colorado School of Mines, Golden, CO 80401 Monzonite and granodiorite intrusions of the Empire Fission-track age determinations were done in the fission- district are early Tertiary (65 Ma) in age, as dated by track laboratory of the U.S. Geological Survey in Denver, Simmons and Hedge (1978). Monzonite and granodiorite and at the University of Utah Research Institute. People intrusions of the Alma district have yielded isotopic ages who cooperated in this study include Mark Coolbaugh, ranging from 71 to 41 Ma (Bookstrom, in press). -
Summits on the Air – ARM for USA - Colorado (WØC)
Summits on the Air – ARM for USA - Colorado (WØC) Summits on the Air USA - Colorado (WØC) Association Reference Manual Document Reference S46.1 Issue number 3.2 Date of issue 15-June-2021 Participation start date 01-May-2010 Authorised Date: 15-June-2021 obo SOTA Management Team Association Manager Matt Schnizer KØMOS Summits-on-the-Air an original concept by G3WGV and developed with G3CWI Notice “Summits on the Air” SOTA and the SOTA logo are trademarks of the Programme. This document is copyright of the Programme. All other trademarks and copyrights referenced herein are acknowledged. Page 1 of 11 Document S46.1 V3.2 Summits on the Air – ARM for USA - Colorado (WØC) Change Control Date Version Details 01-May-10 1.0 First formal issue of this document 01-Aug-11 2.0 Updated Version including all qualified CO Peaks, North Dakota, and South Dakota Peaks 01-Dec-11 2.1 Corrections to document for consistency between sections. 31-Mar-14 2.2 Convert WØ to WØC for Colorado only Association. Remove South Dakota and North Dakota Regions. Minor grammatical changes. Clarification of SOTA Rule 3.7.3 “Final Access”. Matt Schnizer K0MOS becomes the new W0C Association Manager. 04/30/16 2.3 Updated Disclaimer Updated 2.0 Program Derivation: Changed prominence from 500 ft to 150m (492 ft) Updated 3.0 General information: Added valid FCC license Corrected conversion factor (ft to m) and recalculated all summits 1-Apr-2017 3.0 Acquired new Summit List from ListsofJohn.com: 64 new summits (37 for P500 ft to P150 m change and 27 new) and 3 deletes due to prom corrections.