DOCSLIB.ORG

INTRODUCTION Annual Reports on Actual Operations and Operating

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
INTRODUCTION Annual Reports on Actual Operations and Operating INTRODUCTION Annual reports on actual operations and operating plans for reservoir regulation activities were initiated in 1953. The Montana Area Office (MTAO), Wyoming Area Office (WYAO), Dakotas Area Office (DKAO) and the Regional Office are all responsible for preparing reports on actual operations and operating plans for reservoirs within the Upper Missouri River Basin above Sioux City, Iowa. This report briefly summarizes weather and streamflow conditions in the Upper Missouri River Basin during water year 2009, which are principal factors governing the pattern of reservoir operations. This report also describes operations during water year 2009 for reservoirs constructed by the Bureau of Reclamation (Reclamation) for providing flood control and water supplies for power generation, irrigation, municipal and industrial uses, and to enhance recreation, fish, and wildlife benefits. This report includes operating plans to show estimated ranges of operation for water year 2010, with a graphical presentation on a monthly basis. The operating plans for the reservoirs are presented only to show possible operations under a wide range of inflows, most of which cannot be reliably forecasted at the time operating plans are prepared; therefore, plans are at best only probabilities. The plans are updated monthly as the season progresses as more reliable estimates of inflow become available. A report section devoted to Energy Generation is included at the end of this report. The energy generation and water used for power at Reclamation and Corps of Engineers (Corps) plants are discussed, and the energy generated in 2009 is compared graphically with that of previous years. Energy produced at the Reclamation and Corps mainstem plants is marketed by the Department of Energy. Table CET6, entitled "Total Reservoir Storage Contents at the End of Water Years 2008 and 2009," compares the water storage available at the beginning of water year 2010 to that available at the beginning of water year 2009. Table CET7 is a summary of the end of month storage contents for each reservoir during water year 2009. The MTAO also assists in the preparation of plans for operation of the Corps reservoir on the mainstem of the Missouri River by furnishing depletion estimates based upon the operating plans presented in this report. All references to a year in this report will mean the water year extending from October 1 through September 30, unless specifically stated otherwise. 1 SUMMARY OF HYDROLOGIC CONDITIONS AND FLOOD CONTROL OPERATIONS DURING 2009 Antecedent Conditions: The conditions that existed following the 2008 water year indicated that the drought conditions remained prominent in southeast Montana. Temperatures finished the year below average, while the average annual precipitation varied widely, providing mixed feelings for the upcoming year. Conditions for the Upper Missouri River Basin showed moderate improvement overall. The mountain and valley precipitation for most basins in Montana east of the Continental Divide and the Bighorn River Basin in Wyoming were near to above normal during early fall through March except for the Sun River, Marias River, Milk River and St. Mary River Basins in northwest Montana where valley precipitation was below average. During May the precipitation reached levels much above average in the mountains and valleys, before dropping off to low levels to finish out the end of the year in all the basins except the Milk River and St. Mary River Basins which received good precipitation in June as well. Near normal temperatures and precipitation throughout September in most of the basins brought a glimmer of light to the situation as most basins finished out the year with precipitation levels between 80 and 123 percent of normal. The exception was the Beaverhead River Basin where valley precipitation was only 67 percent of average for water year 2008. According to the Natural Resources Conservation Service (NRCS), the snowpack on April 1, 2008, was near to above normal in all the river basins in Montana and Wyoming. It ranged from 96 percent of normal in the Wind River Basin above Boysen Reservoir in Wyoming to 109 percent of normal in the Milk River and St. Mary River Basins. Precipitation improved during April from that experienced in March in all of the basins in Montana, but was significantly less in Wyoming above the Bighorn River Basin. Water year 2008 ended with varying storage levels. Clark Canyon Reservoir was only 52 percent of average while Sherburne Reservoir was 421 percent of average. The Reclamation reservoirs with the least amount of carryover storage were Clark Canyon and Gibson Reservoirs at 37 and 23 percent of full capacity. October through December: Precipitation for the 2009 water year began with precipitation totals varying considerably. Mountain precipitation during October ranged between 53 percent of average in the Marias River Basin to 117 percent of normal in the Beaverhead River Basin, while the valley precipitation varied from only 16 percent of average in the Marias River Basin to 158 percent of average in the Bighorn River Basin. The valley and mountain precipitation in November ranged from 37 and 50 percent of average respectively, in the St. Mary River Basin to 106 and 128 percent of average in the Gallatin River Basin. During December weather conditions improved as frequent storms brought moderate precipitation to many areas of the mountains and valley regions in Montana and Wyoming. The valley precipitation values in December ranged from 118 percent of average in the Gallatin River Basin to 266 percent in the Marias River Basin. 2 The mountain precipitation ranged from 144 percent above Lima Reservoir in the Beaverhead River Basin to 76 percent of average above Lake Sherburne in Glacier National Park. For some basins, the early precipitation patterns indicated drought conditions may continue. However, by December hydrologic and climatic conditions showed signs of improvement around the state with the exception of the St. Mary River Basin, Tables MTT1A and MTT1B. January through March: The mountain precipitation during January varied from 54 percent of average in the Beaverhead River Basin to 140 percent of average in the Bighorn River Basin. The valley precipitation varied from only 26 percent of average in the Gallatin River Basin to 128 percent of average in the Milk River Basin. On January 1, the NRCS reported mountain snowpack in Montana east of the Continental Divide ranging from 58 percent of normal in the St. Mary River Basin to 109 percent of normal in the Jefferson River Basin, Table MTT2. The mountain snowpack was 89 percent of normal in the Bighorn River Basin in Wyoming. Mountain snow water content statewide was 97 percent of average and 120 percent of last year. Precipitation during February was light. The mountain precipitation varied from 47 percent of average in the Beaverhead River Basin to 86 percent of average above Lake Sherburne. The valley precipitation was slightly better and varied from only 27 percent of average in the Beaverhead River Basin to 126 percent of average in the Marias River Basin. By March 1, about 80 percent of the seasonal snowpack should be on the ground. On March 1, the NRCS reported snowpack conditions statewide was about 87 percent of average and about 81 percent of last year at this time. Precipitation was much improved during March. During March, the mountain precipitation varied from 110 percent of average in the Bighorn River Basin to 143 percent of average in the Beaverhead River Basin above Clark Canyon Reservoir. The valley precipitation varied from only 28 percent of average in the Milk River Basin to 231 percent of average in the Jefferson River Basin. On April 1, the NRCS reported snowpack conditions statewide was about 100 percent of average and about 91 percent of last year at this time. April through June: On April 1, the mountain precipitation varied from 77 percent of average above Sherburne Reservoir to 146 percent of average in the Sun River Basin. The valley precipitation varied from 130 percent of average in the Bighorn River Basin to 227 percent of average in the Gallatin River Basin. The April and May temperatures were near to below average across much of Montana and Wyoming. Numerous spring storms also frequented much of the state. These cooler temperatures delayed the high elevation snowmelt and above normal precipitation resulted in a later snowmelt runoff season and also produced higher snowpack peaks later than normal. According to NRCS records, the May 1 mountain snow water contents statewide for Montana were 102 percent of average and 76 percent of last year. 3 4 5 6 7 8 The precipitation across Montana during May declined significantly from the previous month. The mountain precipitation varied from only 39 percent of average in the Sun River Basin to 77 percent of average in the Gallatin River Basin. The valley precipitation ranged from 29 percent in the St. Mary River Basin to 72 percent of average in the Gallatin River Basin. In general, all basins above Reclamation projects in Montana received precipitation rates much below average during May. However; due to temperatures staying cool, the high elevation snowmelt was substantially delayed and had just started to melt. According to NRCS records, the June 1 mountain snow water contents statewide for Montana were 92 percent of average and 62 percent of last year. The above figures come from NOAA and show how April ranked in terms of 115 years of record from Coldest, and Driest to Warmest and Wettest. In 2009 Temperature ranked at 44 and precipitation was at 96. The colors may help bring things to life better as the actual numbers are hard to read at this size. Normally the higher elevation snowpack reaches peak accumulations around the middle of April and begins to melt out. However, because of the cooler temperatures experienced in April and May and the frequent spring storms in May, much of the higher elevation snowmelt did not begin to occur until late May or early June.
Load more

Recommended publications
  • Montana State Parks Guide Reservations for Camping and Other Accommodations: Toll Free: 1-855-922-6768 Stateparks.Mt.Gov
    For more information about Montana State Parks: 406-444-3750 TDD: 406-444-1200 website: stateparks.mt.gov P.O. Box 200701 • Helena, MT 59620-0701 Montana State Parks Guide Reservations for camping and other accommodations: Toll Free: 1-855-922-6768 stateparks.mt.gov For general travel information: 1-800-VISIT-MT (1-800-847-4868) www.visitmt.com Join us on Twitter, Facebook & Instagram If you need emergency assistance, call 911. To report vandalism or other park violations, call 1-800-TIP-MONT (1-800-847-6668). Your call can be anonymous. You may be eligible for a reward. Montana Fish, Wildlife & Parks strives to ensure its programs, sites and facilities are accessible to all people, including those with disabilities. To learn more, or to request accommodations, call 406-444-3750. Cover photo by Jason Savage Photography Lewis and Clark portrait reproductions courtesy of Independence National Historic Park Library, Philadelphia, PA. This document was produced by Montana Fish Wildlife & Parks and was printed at state expense. Information on the cost of this publication can be obtained by contacting Montana State Parks. Printed on Recycled Paper © 2018 Montana State Parks MSP Brochure Cover 15.indd 1 7/13/2018 9:40:43 AM 1 Whitefish Lake 6 15 24 33 First Peoples Buffalo Jump* 42 Tongue River Reservoir Logan BeTableaverta ilof Hill Contents Lewis & Clark Caverns Les Mason* 7 16 25 34 43 Thompson Falls Fort3-9 Owen*Historical Sites 28. VisitorMadison Centers, Buff Camping,alo Ju mp* Giant Springs* Medicine Rocks Whitefish Lake 8 Fish Creek 17 Granite11-15 *Nature Parks 26DisabledMissouri Access Headw ibility aters 35 Ackley Lake 44 Pirogue Island* WATERTON-GLACIER INTERNATIONAL 2 Lone Pine* PEACE PARK9 Council Grove* 18 Lost Creek 27 Elkhorn* 36 Greycliff Prairie Dog Town* 45 Makoshika Y a WHITEFISH < 16-23 Water-based Recreation 29.
    [Show full text]
  • Montana Fishing Regulations
    MONTANA FISHING REGULATIONS 20March 1, 2018 — F1ebruary 828, 2019 Fly fishing the Missouri River. Photo by Jason Savage For details on how to use these regulations, see page 2 fwp.mt.gov/fishing With your help, we can reduce poaching. MAKE THE CALL: 1-800-TIP-MONT FISH IDENTIFICATION KEY If you don’t know, let it go! CUTTHROAT TROUT are frequently mistaken for Rainbow Trout (see pictures below): 1. Turn the fish over and look under the jaw. Does it have a red or orange stripe? If yes—the fish is a Cutthroat Trout. Carefully release all Cutthroat Trout that cannot be legally harvested (see page 10, releasing fish). BULL TROUT are frequently mistaken for Brook Trout, Lake Trout or Brown Trout (see below): 1. Look for white edges on the front of the lower fins. If yes—it may be a Bull Trout. 2. Check the shape of the tail. Bull Trout have only a slightly forked tail compared to the lake trout’s deeply forked tail. 3. Is the dorsal (top) fin a clear olive color with no black spots or dark wavy lines? If yes—the fish is a Bull Trout. Carefully release Bull Trout (see page 10, releasing fish). MONTANA LAW REQUIRES: n All Bull Trout must be released immediately in Montana unless authorized. See Western District regulations. n Cutthroat Trout must be released immediately in many Montana waters. Check the district standard regulations and exceptions to know where you can harvest Cutthroat Trout. NATIVE FISH Westslope Cutthroat Trout Species of Concern small irregularly shaped black spots, sparse on belly Average Size: 6”–12” cutthroat slash— spots
    [Show full text]
  • Glacier Area Emergency Response Action Plan
    GLACIER AREA EMERGENCY RESPONSE ACTION PLAN PHMSA Sequence Number 2987 EPA FRP ID Number (Pending) Owner/Operator: Phillips 66 2331 City West Blvd. Houston, Texas 77042 24-Hour Number: (800) 231-2551 or (877) 267-2290 Page A7-1 Confidentiality Notice: This document is for the sole use of the intended recipient(s) and contains information that is considered to be proprietary to Phillips 66. Any unauthorized review, use, disclosure or distribution is strictly prohibited. Glacier Area Appendix 7: Response Zone Appendix ERAP Appendix 7: ERAP Table of Contents 7.1 Area Information ........................................................................................................1 7.1.1 Glacier Crude North .......................................................................................1 7.1.2 Cut Bank Station ............................................................................................ 4 7.1.3 Tank Table .....................................................................................................5 7.2 Communication Equipment ........................................................................................6 7.3 Notification Sequence ................................................................................................7 7.4 Emergency Notification Contact List ........................................................................ 10 7.5 Emergency Response Equipment, Testing & Deployment ....................................... 13 7.6 Evacuation Plan ......................................................................................................
    [Show full text]
  • 107 Part 208—Flood Control Regulations
    Corps of Engineers, Dept. of the Army, DoD § 208.10 PART 208—FLOOD CONTROL sponsible for the efficient operation REGULATIONS and maintenance of all of the struc- tures and facilities during flood periods Sec. and for continuous inspection and 208.10 Local flood protection works; mainte- maintenance of the project works dur- nance and operation of structures and fa- ing periods of low water, all without cilities. cost to the United States. 208.11 Regulations for use of storage allo- (3) A reserve supply of materials cated for flood control or navigation and/ or project operation at reservoirs subject needed during a flood emergency shall to prescription of rules and regulations be kept on hand at all times. by the Secretary of the Army in the in- (4) No encroachment or trespass terest of flood control and navigation. which will adversely affect the effi- 208.19 Marshall Ford Dam and Reservoir cient operation or maintenance of the (Mansfield Dam and Lake Travis), Colo- project works shall be permitted upon rado River, Tex. 208.22 Twin Buttes Dam and Reservoir, Mid- the rights-of-way for the protective fa- dle and South Concho Rivers, Tex. cilities. 208.25 Pensacola Dam and Reservoir, Grand (5) No improvement shall be passed (Neosho) River, Okla. over, under, or through the walls, lev- 208.26 Altus Dam and Reservoir, North Fork ees, improved channels or floodways, Red River, Okla. nor shall any excavation or construc- 208.27 Fort Cobb Dam and Reservoir, Pond (Cobb) Creek, Oklahoma. tion be permitted within the limits of 208.28 Foss Dam and Reservoir, Washita the project right-of-way, nor shall any River, Oklahoma.
    [Show full text]
  • FISHING NEWSLETTER 2020/2021 Table of Contents FWP Administrative Regions and Hatchery Locations
    FISHING NEWSLETTER 2020/2021 Table of Contents FWP Administrative Regions and Hatchery Locations .........................................................................................3 Region 1 Reports: Northwest Montana ..........................................................................................................5 Region 2 Reports: West Central Montana .....................................................................................................17 Region 3 Reports: Southwest Montana ........................................................................................................34 Region 4 Reports: North Central Montana ...................................................................................................44 Region 5 Reports: South Central Montana ...................................................................................................65 Region 6 Reports: Northeast Montana ........................................................................................................73 Region 7 Reports: Southeast Montana .........................................................................................................86 Montana Fish Hatchery Reports: .......................................................................................................................92 Murray Springs Trout Hatchery ...................................................................................................................92 Washoe Park Trout Hatchery .......................................................................................................................93
    [Show full text]
  • US Fish & Wildlife Service Revised
    U.S. Fish & Wildlife Service Revised RECOVERY PLAN for the Pallid Sturgeon (Scaphirhynchus albus) Original Plan Approved: November 1993 Prepared by: Pallid Sturgeon Recovery Coordinator U.S. Fish and Wildlife Service Montana Fish and Wildlife Conservation Office Billings, Montana For Mountain-Prairie Region U.S. Fish and Wildlife Service Denver, CO January 2014 DISCLAIMER Recovery plans delineate reasonable actions that are believed necessary to recover and/or protect listed species. Plans are prepared by the U.S. Fish and Wildlife Service, sometimes with the assistance of recovery teams, contractors, State agencies, and others. Plans are reviewed by the public and subject to additional peer review before they are adopted by the U.S. Fish and Wildlife Service. Objectives will only be attained and funds expended contingent upon appropriations, priorities, and other budgetary constraints. Recovery plans do not obligate other parties to undertake specific tasks. Recovery plans do not necessarily represent the views nor the official positions or approval of any individuals or agencies involved in the plan formulation, other than the U.S. Fish and Wildlife Service. They represent the official position of the U.S. Fish and Wildlife Service only after they have been signed by the Regional Director or Director as approved. Approved recovery plans are subject to modification as dictated by new findings, changes in species’ status, and the completion of recovery tasks. Copies of all documents reviewed in development of the plan are available in the administrative record, located at the U.S. Fish and Wildlife Service’s Montana Fish and Wildlife Conservation Office, Billings, Montana.
    [Show full text]
  • Boysen Reservoir and Powerplant
    Upper Missouri River Basin Water Year 2015 Summary of Actual Operations Water Year 2016 Annual Operating Plans U.S. Department of Interior Bureau of Reclamation Great Plains Region TABLE OF CONTENTS SUMMARIES OF OPERATION FOR WATER YEAR 2015 FOR RESERVOIRS IN MONTANA, WYOMING, AND THE DAKOTAS INTRODUCTION RESERVOIRS UNDER THE RESPONSIBILITY OF THE MONTANA AREA OFFICE SUMMARY OF HYDROLOGIC CONDITIONS AND FLOOD CONTROL OPERATIONS DURING WY 2015 ........................................................................................................................ 1 FLOOD BENEFITS ...................................................................................................................... 13 UNIT OPERATIONAL SUMMARIES FOR WY 2015 .............................................................. 15 Clark Canyon Reservoir ............................................................................................................ 15 Canyon Ferry Lake and Powerplant .......................................................................................... 21 Helena Valley Reservoir ........................................................................................................... 32 Sun River Project ...................................................................................................................... 34 Gibson Reservoir ................................................................................................................... 34 Pishkun Reservoir ................................................................................................................
    [Show full text]
  • 2013 NOV - I AM 19 REGIONS 8: R:·L L
    UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 2013 NOV - I AM 19 REGIONS 8: r:·l L. ·1 . •- ..J Docket No. CWA-08-2014-0004 CPA HEGIOU VIII pr A~' l ~lc; CL FRI~ In the Matter of: ) ) Nelcon, Inc. ) ADMINISTRATIVE ORDER 304 Jellison Road ) FOR COMPLIANCE ON CONSENT Kalispell, Mt. 59903, ) ) Respondent. ) INTRODUCTION 1. This Administrative Order for Compliance on Consent (Consent Order) is entered into voluntarily by Nelcon, Inc. (Respondent) and the United States Environmental Protection Agency (EPA). The EPA has authority to issue this Consent Order pursuant to section 309(a) of the Clean Water Act (Act), 33 U.S.C. § 1319(a), which authorizes the Administrator of the EPA to issue an order requiring compliance by a person found to be in violation of, inter alia, section 301(a) of the Act. This authority has been properly delegated to the undersigned EPA official. 2. The Findings in paragraph numbers 7 through 44 below are made solely by the EPA. In signing this Consent Order, and for that limited purpose only, Respondent neither admits nor denies the Findings. 3. Without any admission of liability, Respondent consents to issuance of this Consent Order and agrees to abide by all of its conditions. Respondent waives any and all remedies, claims for relief, and otherwise available rights to judicial or administrative review that Respondent may have with respect to any issue of fact or law set forth in this Consent Order, including any right ofjudicial review of this Consent Order under the Administrative Procedure Page 1 of 12 Act, 5 U.S.C.
    [Show full text]
  • The Erosion of the Racial Frontier: Settler Colonialism and the History
    THE EROSION OF THE RACIAL FRONTIER: SETTLER COLONIALISM AND THE HISTORY OF BLACK MONTANA, 1880-1930 by Anthony William Wood A thesis submitted in partial fulfillment of the requirements for the degree of Master of Arts in History MONTANA STATE UNIVERSITY Bozeman, Montana April 2018 ©COPYRIGHT by Anthony William Wood 2018 All Rights Reserved ii ACKNOWLEDGEMENTS I would like to thank the history faculty at Carroll College and Dr. Swarthout who pushed history majors such as myself to work as interns with the Montana State Historic Preservation Office in Helena, Montana. It was at SHPO that I was so fortunate to work for Kate Hampton, who had already worked tirelessly keeping the Montana’s African American Heritage Places Project alive for over a decade, and who continued to lead and guide me while I researched and wrote for the project for three years. Classes I took at MSU, especially Dr. Mark Fiege’s seminar on the American West, offered strikingly new approaches that opened up different methods as well as mountains of scholarship that would profoundly inform how I thought about race and the American West. I am further indebted to my wonderful committee members, Drs. Mary Murphey, Amanda Hendrix- Komoto, Billy Smith, and my chair, Mark Fiege for all their time spent talking with me about sections of my thesis, different approaches I might try, or even just listening as I tried to organize my ideas. I am also thankful and sorry to my office-mates Amanda Hardin and Jen Dunn who were unlucky enough to work within ear-shot.
    [Show full text]
  • Milk and Lower Marias River Watersheds: Assessing and Maintaining the Health of Wetland Communities
    Milk and Lower Marias River Watersheds: Assessing and Maintaining the Health of Wetland Communities Prepared for: The Bureau of Reclamation By: W. Marc Jones Montana Natural Heritage Program Natural Resource Information System Montana State Library June 2003 Milk and Lower Marias River Watersheds: Assessing and Maintaining the Health of Wetland Communities Prepared for: The Bureau of Reclamation Agreement Number: 01 FG 601 522 By: W. Marc Jones 2003 Montana Natural Heritage Program P.O. Box 201800 • 1515 East Sixth Avenue • Helena, MT 59620-1800 • 406-444-3009 This prefered citation for this document is: Jones, W. M. 2003. Milk and Lower Marias River Watersheds: Assessing and Maintaining the Health of Wetland Communities. Report to the Bureau of Reclamation. Montana Natural Heritage Program, Helena. 17 pp. plus appendices. Table of Contents Introduction..................................................................................................................................... 1 Study Area ...................................................................................................................................... 1 Physical Setting ........................................................................................................................... 1 Vegetation and Ecological Processes .......................................................................................... 3 Methods..........................................................................................................................................
    [Show full text]
  • 2017 Wings Reg. Brochure
    program 17 layout:Layout 1 2/22/17 2:10 PM Page 1 18th ANNUAL MONTANA AUDUBON BIRD FESTIVAL June 9–11, 2017 Best Western Plus Heritage Inn Great Falls, Montana John Lambing Russell Hill program 17 layout:Layout 1 2/22/17 2:10 PM Page 2 welcome Festival headquarters and lodging The Best Western Plus Heritage Inn is located off the 10th Avenue South We will be celebrating the milestone of Montana (I-15) exit in Great Falls and is within minutes of the CM Russell Museum, Audubon’s first 40 Years at our 18th Annual Lewis and Clark Interpretive Center, Giant Springs State Park, First People’s Wings Across the Big Sky Festival, co-hosted by Buffalo Jump, Great Falls International Airport, Holiday Village Mall, and the the Upper Missouri Breaks Audubon Chapter. Rivers Edge Trail along the Missouri River. As the largest full-service hotel in This is shaping up to be a spectacular event and Central Montana with 231 guest rooms and over 17,000 sq. ft. event space we hope you will join us in Great Falls, June 9–11, with 12 meeting rooms, we are able to accommodate groups of all sizes. 2017. Registration will open at 1:00 p.m. so plan Complimentary features include: airport and area-wide transportation, to sign in and enjoy a special presentation parking, wireless internet, indoor pool and fitness center. The address is Friday afternoon, followed by a Barbecue and 1700 Fox Farm Road and is easily accessible from the south, north or west Celebration Friday evening.
    [Show full text]
  • Paleontology and Stratigraphy of Upper Coniacianemiddle
    University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln USGS Staff -- Published Research US Geological Survey 2005 Paleontology and stratigraphy of upper Coniacianemiddle Santonian ammonite zones and application to erosion surfaces and marine transgressive strata in Montana and Alberta W. A. Cobban U.S. Geological Survey T. S. Dyman U.S. Geological Survey, [email protected] K. W. Porter Montana Bureau of Mines and Geology Follow this and additional works at: https://digitalcommons.unl.edu/usgsstaffpub Part of the Earth Sciences Commons Cobban, W. A.; Dyman, T. S.; and Porter, K. W., "Paleontology and stratigraphy of upper Coniacianemiddle Santonian ammonite zones and application to erosion surfaces and marine transgressive strata in Montana and Alberta" (2005). USGS Staff -- Published Research. 367. https://digitalcommons.unl.edu/usgsstaffpub/367 This Article is brought to you for free and open access by the US Geological Survey at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in USGS Staff -- Published Research by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Cretaceous Research 26 (2005) 429e449 www.elsevier.com/locate/CretRes Paleontology and stratigraphy of upper Coniacianemiddle Santonian ammonite zones and application to erosion surfaces and marine transgressive strata in Montana and Alberta W.A. Cobban a,1, T.S. Dyman b,*, K.W. Porter c a US Geological Survey, Denver, CO 80225, USA b US Geological Survey, Denver, CO 80225, USA c Montana Bureau of Mines and Geology, Butte, MT 59701, USA Received 28 September 2004; accepted in revised form 17 January 2005 Available online 21 June 2005 Abstract Erosional surfaces are present in middle and upper Coniacian rocks in Montana and Alberta, and probably at the base of the middle Santonian in the Western Interior of Canada.
    [Show full text]