Stream flow changes across North Carolina (USA) 1955-2012 with implications for environmental flow management

被引:12
作者
Meitzen, Kimberly M. [1 ]
机构
[1] SW Texas State Univ, Dept Geog, San Marcos, TX 78666 USA
关键词
Environmental flow management; South Atlantic hydrology; Stream flow change metrics; Dams; Water policy; HYDROLOGIC ALTERATION; SOUTH ATLANTIC; HABITAT; CONSEQUENCES; REGIMES; RIVER; DAMS;
D O I
10.1016/j.geomorph.2015.06.019
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
This study examines changes in stream flow conditions across North Carolina, relates these changes to geomorphological conditions of rivers, and makes recommendations for environmental flow guidelines to conserve and protect riverine ecosystems. Monthly stream flow percentile metrics (90th, 75th, 50th, 25th, and 10th percentiles) are compared over two time periods (1955-1980 and 1984-2012) for 63 gages distributed statewide. The results showed that stream flow changes vary spatially by flow magnitude, ecoregion, basin, and temporally by months. The greatest changes involve decreases to the 10th, 25th, 50th, and 75th percentiles and the least amount of change is associated with 90th percentile flows. The spring and summer months of February through August have the greatest flow reductions, while September, November, and December exhibit magnitude increases for the 75th and 90th percentile flows. The Blue Ridge has the least amount of change, whereas the Piedmont and Coastal Plain have the greatest change. The few gages that do not show significant magnitude decreases to the 10th percentile flow are below major dams on the Neuse, Cape Fear, and Roanoke rivers. These same dammed rivers exhibit increases to the 90th percentile flows. The Tar River Basin, which is free of dams, shows opposite effects, with significant decreases to the 10th percentile flows and minimal changes to the 75th and 90th percentile flows. This study elucidates the importance of establishing environmental flow criteria that apply statewide across North Carolina. Sustainable environmental flow criteria need to be established that conserve seasonal patterns of flows, sustain low flows (from increases and decreases), and protect headwater and tributary accumulation areas from over-abstraction. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:171 / 184
页数:14
相关论文
共 42 条
  • [21] QUANTIFYING UNCERTAINTY IN ESTIMATION OF HYDROLOGIC METRICS FOR ECOHYDROLOGICAL STUDIES
    Kennard, Mark J.
    Mackay, Stephen J.
    Pusey, Bradley J.
    Olden, Julian D.
    Marsh, Nick
    [J]. RIVER RESEARCH AND APPLICATIONS, 2010, 26 (02) : 137 - 156
  • [22] Adaptation to natural flow regimes
    Lytle, DA
    Poff, NL
    [J]. TRENDS IN ECOLOGY & EVOLUTION, 2004, 19 (02) : 94 - 100
  • [23] Factors Influencing Bank Geomorphology and Erosion of the Haw River, a High Order River in North Carolina, since European Settlement
    Macfall, Janet
    Robinette, Paul
    Welch, David
    [J]. PLOS ONE, 2014, 9 (10):
  • [24] Changes in hydrologic regime by dams
    Magilligan, FJ
    Nislow, KH
    [J]. GEOMORPHOLOGY, 2005, 71 (1-2) : 61 - 78
  • [25] Geomorphology within the interdisciplinary science of environmental flows
    Meitzen, Kimberly M.
    Doyle, Martin W.
    Thoms, Martin C.
    Burns, Catherine E.
    [J]. GEOMORPHOLOGY, 2013, 200 : 143 - 154
  • [26] Olivero ArleneP., 2008, NE AQUATIC HABITAT C
  • [27] Patten DT, 2001, ECOL APPL, V11, P635, DOI 10.1890/1051-0761(2001)011[0635:AMFOTC]2.0.CO
  • [28] 2
  • [29] Climate and direct human contributions to changes in mean annual streamflow in the South Atlantic, USA
    Patterson, Lauren A.
    Lutz, Brian
    Doyle, Martin W.
    [J]. WATER RESOURCES RESEARCH, 2013, 49 (11) : 7278 - 7291
  • [30] Streamflow Changes in the South Atlantic, United States During the Mid- and Late 20th Century
    Patterson, Lauren A.
    Lutz, Brian
    Doyle, Martin W.
    [J]. JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION, 2012, 48 (06): : 1126 - 1138