Location and timing of river-aquifer exchanges in six tributaries to the Columbia River in the Pacific Northwest of the United States

Konrad, Christopher P.

doi:10.1016/j.jhydrol.2006.02.028

Cited by 57 publications

(61 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Discussion on the hydrological processes involved in channel transmission losses can be found, e.g. in Renard (1970), Abdulrazzak and Morel-Seytoux (1983), Knighton and Nanson (1994), Lange et al (1998), Dunkerley and Brown (1999), Lange (2005), Konrad (2006), Dahan et al (2007Dahan et al ( , 2008 and Dagés et al (2008). From those studies, channel transmission losses may be seen to behave as follows: small sub-bank flows must firstly fill pool abstractions and channel filaments in order to propagate downstream; then bank-full flows infiltrate predominantly into bed and levees; and, at high stream discharges, overbank flows lose water for pools, subsidiary channels and floodplains, but once they become fully saturated, the most direct floodways become fully active and channel transmission losses decrease.…”

mentioning

confidence: 99%

“…On the other hand, rapid deep infiltration may be driven by an active preferential flow mechanism that bypasses the porous matrix of the vadose zone (Dahan et al, 2007). Moreover, stream-aquifer exchanges may constitute hyporheic flow as in the case where a stream loses flow to a shallow aquifer that discharges back to the stream in a downstream reach due to decrease in aquifer thickness, aquifer narrowing and/or decrease in aquifer hydraulic conductivity (Konrad, 2006). In this way, the groundwater table rises due to the upstream groundwater recharge (Dahan et al, 2007).…”

mentioning

confidence: 99%

See 1 more Smart Citation

A channel transmission losses model for different dryland rivers

Costa

Bronstert

Araújo

2012

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Channel transmission losses in drylands take place normally in extensive alluvial channels or streambeds underlain by fractured rocks. They can play an important role in streamflow rates, groundwater recharge, freshwater supply and channel-associated ecosystems. We aim to develop a process-oriented, semi-distributed channel transmission losses model, using process formulations which are suitable for data-scarce dryland environments and applicable to both hydraulically disconnected losing streams and hydraulically connected losing(/gaining) streams. This approach should be able to cover a large variation in climate and hydro-geologic controls, which are typically found in dryland regions of the Earth. Our model was first evaluated for a losing/gaining, hydraulically connected 30 km reach of the Middle Jaguaribe River (MJR), Ceará, Brazil, which drains a catchment area of 20 000 km 2 . Secondly, we applied it to a small losing, hydraulically disconnected 1.5 km channel reach in the Walnut Gulch Experimental Watershed (WGEW), Arizona, USA. The model was able to predict reliably the streamflow volume and peak for both case studies without using any parameter calibration procedure. We have shown that the evaluation of the hypotheses on the dominant hydrological processes was fundamental for reducing structural model uncertainties and improving the streamflow prediction. For instance, in the case of the large river reach (MJR), it was shown that both lateral stream-aquifer water fluxes and groundwater flow in the underlying alluvium parallel to the river course are necessary to predict streamflow volume and channel transmission losses, the former process being more relevant than the latter. Regarding model uncertainty, it was shown that the approaches, which were applied for the unsaturated zone processes (highly nonlinear with elaborate numerical solutions), are much more sensitive to parameter variability than those approaches which were used for the saturated zone (mathematically simple water budgeting in aquifer columns, including backwater effects). In case of the MJR-application, we have seen that structural uncertainties due to the limited knowledge of the subsurface saturated system interactions (i.e. groundwater coupling with channel water; possible groundwater flow parallel to the river) were more relevant than those related to the subsurface parameter variability. In case of the WEGW application we have seen that the non-linearity involved in the unsaturated flow processes in disconnected dryland river systems (controlled by the unsaturated zone) generally contain far more model uncertainties than do connected systems controlled by the saturated flow. Therefore, the degree of aridity of a dryland river may be an indicator of potential model uncertainty and subsequent attainable predictability of the system.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

A channel transmission losses model for different dryland rivers

Costa

Bronstert

Araújo

2012

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…This could arise from increased transmission loss, or decrease in lateral inputs from hillslopes or riparian areas. Most of the reaches where downstream loss in Q was observed did not appear to have the morphologic features -deep alluvium in an unconfined valley or a contact between different lithologies-that typically contribute to the presence of a 20 strongly losing reach (Larned et al 2011, Konrad 2006.…”

Section: Downstream Declines In Yieldmentioning

confidence: 97%

Spatial and Temporal Variability in Baseflow in the Mattole River Headwaters, California, USA

Queener¹,

Stubblefield

2016

Preprint

View full text Add to dashboard Cite

Abstract.Increases in human population, water use, and climate change have the potential to increase water stress and scarcity particularly in ecosystems with pronounced seasonality in precipitation, yet our understanding of the landscape features that control baseflows remains limited. Repeated synoptic measurements of streamflow in small streams (basin area 10 . Unit-area yields varied widely, and this variation increased as flows declined at most sites. In nested basins, downstream declines in both discharge and unit-area yield were common. Basins with greater summer flow and a slower baseflow 15 recession had steeper slopes, higher elevations, less flat ground and narrower valleys, more dissected and strongly convergent topography, and more precipitation. The difference in water yield among basins was much greater than the difference in precipitation, likely resulting from varying basin water inputs, storage capacity, and routing. The positive correlation between basin steepness and flow is attributable to the thickness of the weathered bedrock layer in water storage, and more rapid bedrock weathering in steeper basins with higher rates of uplift resulting in greater basin storage capacity. 20Results show that basins in a small geographic area (<85 km 2 ) and with fairly similar geology, vegetation, and topography may generate widely differing baseflow. Streams with naturally low baseflows are particularly susceptible to water diversion. Low-gradient streams essential for coho salmon rearing may be particularly susceptible to climate change or water diversions that reduce streamflow. 25

show abstract

“…Where there are large exchanges of water between rivers and shallow aquifers, their physical characteristics and chemical constituents will be similar [22].…”

Section: Introductionmentioning

confidence: 99%

“…For this purpose, inspiring from several studies [22] [24] done to characterize the river-shallow aquifer exchange process, we attempts on this research article to spot the relation river-shallow aquifer and its impact on Oued El Abid River…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the River-Shallow Aquifer Exchange Process Effect on Surface Water Quality Deterioration

Ismail¹,

Arioua²,

Idrissi³

et al. 2017

GEP

View full text Add to dashboard Cite

Recently, according to a survey carried out in Oued El Abid River by Oum Er-Rbia Hydraulic Basin Agency concerned about the surface water quality, the downstream course is undergoing continual degradation in its water quality comparable to the upstream. This study comes to localize the sources of pollution and explains the process of degradation, which affects the water quality in that area. For this purpose, an inspection of the place has been done during January 2017 to cover the entire zone limited by the affected part of river, followed by a survey, which interests to water quality and the groundwater depth. The inspection doesn't show any direct liquid discharge into the river; meanwhile the water quality degradation is related to the underground sources through river-shallow-aquifer exchange process, when the obtained results from the survey showed that severe parameters are involved in the degradation of groundwater, as the geology and agricultural activities. Combining these results with flow direction in groundwater, it is clear that pollutants are transported to the river via the river-shallow aquifer exchange process, which affects its quality. Based on the finding results, this study will give the decision makers a simple view to a complex pollution processing.

show abstract

Location and timing of river-aquifer exchanges in six tributaries to the Columbia River in the Pacific Northwest of the United States

Cited by 57 publications

References 33 publications

A channel transmission losses model for different dryland rivers

A channel transmission losses model for different dryland rivers

Spatial and Temporal Variability in Baseflow in the Mattole River Headwaters, California, USA

Evaluation of the River-Shallow Aquifer Exchange Process Effect on Surface Water Quality Deterioration

Contact Info

Product

Resources

About