• Hydrologic effects of land and water management in North America and Asia: 1700–1992 

      Haddeland, Ingjerd; Skaugen, Thomas; Lettenmaier, Dennis (Journal article, 2006)
      The hydrologic effects of land use changes, dams, and irrigation in North America and Asia over the past 300 years are studied using a macroscale hydrologic model. The simulation results indicate that the expansion of ...
    • Anthropogenic impacts on continental surface water fluxes 

      Haddeland, Ingjerd; Skaugen, Thomas; Lettenmaier, Dennis (Journal article, 2006)
      Impacts of reservoirs and irrigation water withdrawals on continental surface water fluxes are studied within the framework of the Variable Infiltration Capacity (VIC) model for a part of North America, and for Asia. A ...
    • Reconciling Simulated Moisture Fluxes Resulting from Alternate Hydrologic Model Time Steps and Energy Budget Closure Assumptions 

      Haddeland, Ingjerd; Lettenmaier, Dennis P.; Skaugen, Thomas (Journal article, 2006)
      Hydrological model predictions are sensitive to model forcings, input parameters, and the parameterizations of physical processes. Analyses performed for the Variable Infiltration Capacity model show that the resulting ...
    • Disentangling local from macroenvironmental effects: Quantifying the effect of human encroachments based on historical river catches of anadromous salmonids 

      L’Abée-Lund, Jan Henning; Haugen, Thrond; Vøllestad, Leif Asbjørn (Journal article, 2006)
      In this paper, we use dynamic factor and intervention analysis to identify and quantify the effect of human encroachments on anadromous salmonid catches in 22 Norwegian rivers over a 128-year period. In particular, we ...
    • Effects of irrigation on the water and energy balances of the Colorado and Mekong river basins 

      Haddeland, Ingjerd; Lettenmaier, Dennis P.; Skaugen, Thomas (Journal article, 2006)
      An irrigation scheme, based on simulated soil moisture deficit, has been included in the variable infiltration capacity macroscale hydrologic model. Water withdrawals are taken from the nearest river, or, in periods of ...
    • Metoder for å måle vannføring i umålte felt 

      Skaugen, Thomas; Langsholt, Elin (Journal article, 2007)
      Forvaltning og utnyttelse av vannressursene stiller i dag høye krav til robusthet og pålitelighet når det gjelder metoder for beregning av vannføring i umålte felt. Temaet har internasjonalt fokus, og IAHS har tatt initiativet ...
    • Modelling the spatial variability of snow water equivalent at the catchment scale 

      Skaugen, Thomas (Journal article, 2007)
      The spatial distribution of snow water equivalent (SWE) is modelled as a two parameter gamma distribution. The parameters of the distribution are dynamical in that they are functions of the number of accumulation and melting ...
    • Trends in annual maximum snow water equivalent in Norway (1914-2008) 

      Stranden, Heidi Bache; Skaugen, Thomas (Report, 2009)
      In this report, the large number of annual snow data measured annually by the power production companies and reported to NVE, is analysed for the detection of possible temporal trends. There are no indications of significant ...
    • Arctic rivers 

      Brittain, John E.; Bogen, Jim; Khokhlova, Ludmila G.; Melvold, Kjetil; Stenina, Angelina S.; Gislason, Gisli M.; Brørs, Sturla; Kochanov, Sergej K.; Olafsson, Jon S.; Ponomarev, Vasily I.; Jensen, Arne J.; Kokovkin, Alexander V.; Pettersson, Lars-Evan (Chapter, 2009)
    • Snow simulation and forecasting through all Norway: the SeNorge model 

      Endrizzi, Stefano; Skaugen, Thomas (Research report, 2009)
      A model has been recently set up (since 2006) that provides the snow conditions, along with other hydrometeorological parameters, for all Norway at 1 km resolution. This model is called “Senorge” (meaning “See Norway”), ...
    • Satellite observed SCA and gamma distributed snow in the HBV model 

      Skaugen, Thomas; Randen, Frode (Research report, 2009)
      Areas having a seasonal snowpack experience a risk of melt-floods. The magnitude of such a flood is highly dependent on the available water stored in the snow reservoir. Therefore it is of vital importance to estimate the ...
    • Divergent trends in anadromous salmonid populations in Norwegian and Scottish rivers 

      Vøllestad, Leif Asbjørn; Hirst, David; L’Abée-Lund, Jan Henning; Armstrong, John Duncan; MacLean, Julian C.; Youngston, Alan F.; Stenseth, Nils Chr. (Journal article, 2009)
      The Atlantic salmon (Salmo salar) is a charismatic anadromous fish of high conservation and economic value. Concerns have been expressed regarding the long-term viability of fisheries throughout the species’s distributional ...
    • Landsomfattende mark- og grunnvannsnett 

      Opedahl, Jørn; Colleuille, Hervé (Report, 2010)
      Hovedformålet med rapporten er å presentere status for drift av det nasjonale overvåkingsnett for grunnvann og markvann, og oppsummere all virksomhet utført i 2009. Rapporten inkluderer en oversikt over aktive målestasjoner, ...
    • Skurdevikåi tilsigsfelt (015.NDZ) 

      Glad, Per Alve; Colleuille, Hervé (Report, 2010)
      Rapporten inneholder en oversikt over målingene som er innsamlet i NVEs database, samt en kort oversikt over historikk og stasjonsbeskrivelse. I denne rapporten gis en analyse av tilstandsoversikt for det hydrologiske året ...
    • Klimatilpasning innen NVEs ansvarsområder 

      Hisdal, Hege; Pedersen, Turid Bakken; Molkersrød, Kjell; Jensen, Torodd; Jarlset, Thore; Steen, Roger; Melvold, Kjetil; Brittain, Martin; Due, Erik (Report, 2010)
      NVE har utarbeidet en samlet klimatilpasningsstrategi innen sine ansvarsområder. Det gis en systematisk gjennomgang av hvordan et fremtidig endret klima vil påvirke NVEs forvaltningsområder, hvordan NVE skal møte utfordringene, ...
    • Nedre Otta kraftverk 

      Elster, Margrethe Cecilie; Kennie, Patricia Dawn (Report, 2010)
      To alternative utbyggingsalternativer i nedre Otta er vurdert, Åsåren og Pillarguri. Begge alternativene vil innebære sterkt redusert vannføring, erosjon og sedimenttransport på elvestrekningen hvor vann fraføres. Dette ...
    • Etterundersøkelser ved små kraftverk 

      Frilund, Gunn E.; Simensen, Trond; Bremnes, Trond; Saltveit, Svein J.; Brittain, John E.; Ihlen, Per G. (Report, 2010)
      Uheldige sumvirkninger for landskapet er stort sett unngått i studieområdet, siden nøkkelelementer som fosser er skjermet. De enkelte anleggene gir også begrensede konsekvenser, men rørgatetraséer og veianlegg kan være ...
    • Groset forsøksfelt (016.H5) 

      Glad, Per Alve; Colleuille, Hervé (Report, 2010)
      Rapporten inneholder en oversikt over målingene som er innsamlet i NVEs database, samt en kort oversikt over historikk og stasjonsbeskrivelse. I denne rapporten presenteres en analyse av situasjon for grunnvann og markvann ...
    • Has steamflow changed in the Nordic contries? 

      Hisdal, Hege; Holmqvist, Erik; Jónsdóttir, Jóna Finndis; Jónsson, Páll; Kuusisto, Esko; Lindström, Göran; Roal, Lars A. (Report, 2010)
      Climate change studies traditionally include elaboration of possible scenarios for the future and attempts to detect a climate change signal in historical data. This study focuses on the latter, but includes a qualitative ...
    • Filefjell - Kyrkjestølane (073.Z) 

      Glad, Per Alve; Colleuille, Hervé (Report, 2010)
      Rapporten inneholder en oversikt over målingene som er innsamlet i NVEs database, samt en kort oversikt over historikk og stasjonsbeskrivelse. I denne rapporten presenteres en analyse av situasjon for grunnvann og snø i ...