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Babcock , Kenneth P 1 ; Ge , Shemin 2 1 University of Colorado at Boulder 2 University of Colorado at Boulder The purpose of this study is to gain a scientific understanding of the groundwater-surface water interactions occurring between Boulder Creek and an alluvial aquifer. The study area is...

Anthony , James L. 1 ; Lewis , William 2 1 Department of Ecology and Evolutionary Biology, Cooperative Institute for Research in Environmental Sciences, University of Colorado 2 Department of Ecology and Evolutionary Biology, Cooperative Institute for Research in Environmental Sciences, University of Colorado Nutrient mass balance studies suggest that...

Abood , Paul 1 ; Williams , Mark 2 ; Tonnessen , Kathy 3 ; Morris , Kristi 4 1 University of Colorado, Boulder 2 University of Colorado, Boulder 3 Rocky Mountains CESU, National Park Service 4 Air Resources Division, National Park Service NADP/NTN data are used to characterize the...

Watkins , Loring P 1 ; Neupauer , Roseanna M 2 1 University of Colorado at Boulder 2 University of Colorado at Boulder An accurate representation of permeability anisotropy is needed to accurately model the rate and direction of groundwater flow. Wavelet analysis can be used to characterize principal directions...

Ward , Dylan J 1 ; Anderson , Robert S 2 ; Briner , Jason P 3 ; Guido , Zackry S 4 1 University of Colorado, Dept. of Geological Sciences and INSTAAR 2 University of Colorado, Dept. of Geological Sciences and INSTAAR 3 State University of New York at...

Towler , Erin L 1 ; Rajagopalan , Balaji 2 ; Summers , Scott 3 ; Seidel , Chad 4 1 University of Colorado at Boulder 2 University of Colorado at Boulder 3 University of Colorado at Boulder 4 Damon S. Williams Drinking water utilities face complex decisions when balancing...

Syvitski , James 1 1 Environmental Computation and Imaging Group, INSTAAR, University of Colorado at Boulder The UNH water balance and transport model (WBM), based on the STN-30p network, provides a fundamental structure for analyzing the water and sediment flux distribution by river basin, continent, climatic zone, and receiving ocean...

Ryan , Joseph N 1 1 University of Colorado, Boulder We investigated the transport of the cations Cs+ and Sr2+ in flow-through and recirculating saturated quartz porous media in the absence and presence of illite colloids to examine the effect of cation desorption kinetics on colloid-facilitated transport. The illite colloids...

Pitlick , John 1 ; Mueller , Erich 2 ; Segura , Catalina 3 1 Geography Department, CU-Boulder 2 Geography Department, CU-Boulder 3 Geography Department, CU-Boulder In high-gradient channels the sediment which is present on the bed surface (the armor layer) is typically much coarser than the sediment which moves...

Miller , Matthew 1 ; McKnight , Diane 2 ; Alexa , Katherine 3 1 INSTAAR, Environmental Engineering 2 INSTAAR, Environmental Engineering 3 Cornell University We studied the impact of a sustained high elevation rain event in mid-summer on the biogeochemistry of dissolved organic material (DOM) in aquatic ecosystems in...