Evaluation of Channel Re-Alignment Alternatives on Shallow Groundwater and Wetlands

As part of a feasibility study relating to channel alignment along the Rio Grande,  SSP&A fine-tuned and applied a high-resolution riparian groundwater model to characterize alternative  groundwater and wetland conditions under a range of seasonal and flow conditions.   For this project, SSP&A drilled and monitored wells along river transects, monitored river and drain stage; then, incorporated the site-specific data into the model, including LiDAR land surface elevations and high-resolution vegetation coverages.  SSP&A prepared a series of flow-dependent River Packages to specify a transient river boundary condition in simulation of the seasonal hydrograph, through wet spring and dry summer periods.  For each of three channel re-alignment alternatives, SSP&A simulated groundwater conditions and surface water exchanges relevant to the objective of sustaining wetlands and of maintaining flows in the river channel for downstream water delivery and for aquatic species.

Expertise:
Project Category:

US Locations

International Locations