Impacts of spatially and temporally varying snowmelt on subsurface flow in a mountainous watershed: 1. Snowmelt simulation

Abstract The dominant source of streamflow in many mountainous watersheds is snowmelt recharge through shallow groundwater systems. The hydrological response of these watersheds is controlled by basin structure and spatially distributed snowmelt. The purpose of this series of two papers is to simulate spatially varying snowmelt and groundwater response in a small mountainous watershed. This paper examines the spatially and temporally variable snowmelt to be used as input to the groundwater flow modelling described in the second paper. Snowmelt simulation by the Simultaneous Heat and Water (SHAW) model (a detailed process model of the interrelated heat, water and solute movement through vegetative cover, snow, residue and soil) was validated by applying the model to two years of data at three sites ranging from shallow transient snow cover on a west-facing slope to a deep snow drift on a north-facing slope. The simulated energy balances for several melt periods are presented. Snow depth, density, and the m...

[1]  K. Saxton,et al.  Modeling tillage and residue effects on the hydrology of agricultural croplands , 1988 .

[2]  G. Flerchinger,et al.  Impacts of spatially and temporally varying snowmelt on subsurface flow in a mountainous watershed: 2. Subsurface processes , 1994 .

[3]  B. R. Hill.  Groundwater discharge to a headwater valley, northwestern Nevada, U.S.A. , 1990 .

[4]  Jeff Dozier,et al.  Climate and energy exchange at the snow surface in the Alpine Region of the Sierra Nevada: 2. Snow cover energy balance , 1992 .

[5]  Gerald N. Flerchinger,et al.  Simultaneous Heat and Water Model of a Freezing Snow-Residue-Soil System I. Theory and Development , 1989 .

[6]  L. Macdonald.  Forest harvest, snowmelt and streamflow in the central Sierra Nevada , 1987 .

[7]  John L. Nieber,et al.  FIELD TESTING OF A MODEL FOR WATER FLOW AND HEAT TRANSPORT IN VARIABLY SATURATED, VARIABLY FROZEN SOIL , 1991 .

[8]  S. Isard,et al.  The role of advection in the energy balance of late‐lying snowfields: Niwot Ridge, Front Range, Colorado , 1988 .

[9]  D. Tarboton,et al.  A preliminary comparison of snowmelt models for erosion prediction , 1991 .

[10]  G. N. Flerchinger,et al.  Modeling Soil Freezing and Thawing on a Rangeland Watershed , 1989 .

[11]  E. Anderson,et al.  A point energy and mass balance model of a snow cover , 1975 .

[12]  Gerald N. Flerchinger,et al.  Modeling plant canopy effects on variability of soil temperature and water , 1991 .

[13]  M. Prévost,et al.  Application of a snow cover energy and mass balance model in a balsam fir forest , 1990 .

[14]  G. H. Leavesley,et al.  Precipitation-runoff modeling system; user's manual , 1983 .

[15]  Günter Blöschl,et al.  Point snowmelt models with different degrees of complexity — Internal processes , 1991 .

[16]  J. Buttle.  Soil moisture and groundwater responses to snowmelt on a drumlin sideslope , 1989 .

[17]  G. Blöschl,et al.  Distributed Snowmelt Simulations in an Alpine Catchment: 1. Model Evaluation on the Basis of Snow Cover Patterns , 1991 .

[18]  G. Flerchinger,et al.  Groundwater response to snowmelt in a mountainous watershed , 1991 .

[19]  Lars-Christer Lundin,et al.  Surface runoff and soil water percolation as affected by snow and soil frost , 1991 .