In the paper that is the foundation for this study, VanderKwaak and Loague (2001. Water Resources... more In the paper that is the foundation for this study, VanderKwaak and Loague (2001. Water Resources Research 37: 999-1013) reported a demonstration of a fully coupled comprehensive physics-based hydrologic-response model, InHM (Integrated Hydrology Model), for two rainfall-runoff events from the small rangeland catchment known as R-5. The InHM simulations reported herein address (in three phases) limitations in the VanderKwaak and Loague (2001. Water Resources Research 37: 999-1013) simulations. In Phase I, a new finite-element mesh was selected to represent R-5. In Phase II, with the new mesh in place, evaporation was considered for the R-5 events. In Phase III, with the new mesh in place and evaporation considered, the geology of R-5 was approximated. Each phase, compared with the results reported by VanderKwaak and Loague (2001. Water Resources Research 37: 999-1013), shows a change in the simulated near-surface response. The performance of InHM for 15 R-5 events is also reported herein. The results from two stages of model calibration are presented. The uncertainty in initial soil-water content estimates for event-based simulation is shown to be a major limitation for physics-based models. The performance of InHM, relative to past event-based simulation efforts with a quasi-physically based rainfall-runoff model, is better for both peak stormflow and the time to peak stormflow, but worse for stormflow depth. The InHM simulations reported here set the stage for continuous simulation of near-surface response for the R-5 catchment with InHM.
Hundreds of hydrologic-response models have been developed during the last half-century. Each mod... more Hundreds of hydrologic-response models have been developed during the last half-century. Each model has its own advantages and shortcomings, with no single model accepted for all applications. More that 35 years ago Freeze and Harlan proposed a blueprint for a distributed physically-based hydrologic model, based upon numerical solution to the coupled partial differential equations that describe water movement on the
This stormwater management plan focuses on the cantonment and training areas of the Arden Hills A... more This stormwater management plan focuses on the cantonment and training areas of the Arden Hills Army Training Site (AHATS). The plan relates the site stormwater to the regulatory framework, and it summarizes best management practices to aide site managers in promoting clean site runoff. It includes documentation for a newly developed, detailed model of stormwater flow retention for the entire AHATS property and adjacent upgradient areas. The model relies on established modeling codes integrated in a U.S. Department of Defense-sponsored software tool, the Watershed Modeling System (WMS), and it can be updated with data on changes in land use or with monitoring data.
The impacts of logging on near-surface hydrologic response at the catchment and watershed scales ... more The impacts of logging on near-surface hydrologic response at the catchment and watershed scales were examined quantitatively using numerical simulation. The simulations were conducted with the Integrated Hydrology Model (InHM) for the North Fork of Caspar Creek Experimental Watershed, located near Fort Bragg, California. InHM is a comprehensive physics-based hydrologic-response model. The North Fork watershed (including 11 tributary catchments) is the site of an ongoing study monitoring the impacts of forest practices. InHM was parameterized and calibrated using existing data and new field measurements of soilhydraulic properties. Continuous long-term simulations were conducted for three wet seasons: before logging, after logging, and after a period of regrowth. Simulated increases in flow and peak discharges were considerably higher after clearcut harvesting. Concept-development simulations of cumulative watershed effects (CWEs) examined potential impacts of alternative timber harvest levels and methods relative to those that occurred in the North Fork watershed. Results from these simulations show that the increases in the simulated discharge after clearcutting were significant for the catchment and watershed scales and that relatively small changes in soil-hydraulic properties produced substantial changes in hydrologic response. The simulations in this study illustrate that timber harvesting can alter the streamflow generation mechanisms and patterns within a catchment.
The impacts of logging on near-surface hydrologic response at the catchment and watershed scales ... more The impacts of logging on near-surface hydrologic response at the catchment and watershed scales were examined quantitatively using numerical simulation. The simulations were conducted with the Integrated Hydrology Model (InHM) for the North Fork of Caspar Creek Experimental Watershed, located near Fort Bragg, California. InHM is a comprehensive physics-based hydrologic-response model. The North Fork watershed (including 11 tributary catchments) is the site of an ongoing study monitoring the impacts of forest practices. InHM was parameterized and calibrated using existing data and new field measurements of soilhydraulic properties. Continuous long-term simulations were conducted for three wet seasons: before logging, after logging, and after a period of regrowth. Simulated increases in flow and peak discharges were considerably higher after clearcut harvesting. Concept-development simulations of cumulative watershed effects (CWEs) examined potential impacts of alternative timber har...
... Hydrol. Process. 19, 13731398 (2005) Page 6. 1378 K. LOAGUE ET AL. event-based mode. The per... more ... Hydrol. Process. 19, 13731398 (2005) Page 6. 1378 K. LOAGUE ET AL. event-based mode. The performance of InHM is evaluated based upon observed streamflow and estimated soil-water content data. Two stages of model calibration were used in this study. ...
Concept-Development Simulation Two emerging and important disciplines within the large science of... more Concept-Development Simulation Two emerging and important disciplines within the large science of hydrology are hydroecology (Eagleson, 2002; Rodriguez-Iturbe and Porporato, 2004) and hydrogeomorphology (Sidle and Onda, 2004), each requiring an integrated ...
Abstract: This study quantitatively addresses, via simulation, the impacts of forest management p... more Abstract: This study quantitatively addresses, via simulation, the impacts of forest management practices on near-surface hydrologic response at the catchment and watershed scales. The simulations were conducted with the Integrated Hydrology Model ( ...
In the paper that is the foundation for this study, VanderKwaak and Loague (2001. Water Resources... more In the paper that is the foundation for this study, VanderKwaak and Loague (2001. Water Resources Research 37: 999-1013) reported a demonstration of a fully coupled comprehensive physics-based hydrologic-response model, InHM (Integrated Hydrology Model), for two rainfall-runoff events from the small rangeland catchment known as R-5. The InHM simulations reported herein address (in three phases) limitations in the VanderKwaak and Loague (2001. Water Resources Research 37: 999-1013) simulations. In Phase I, a new finite-element mesh was selected to represent R-5. In Phase II, with the new mesh in place, evaporation was considered for the R-5 events. In Phase III, with the new mesh in place and evaporation considered, the geology of R-5 was approximated. Each phase, compared with the results reported by VanderKwaak and Loague (2001. Water Resources Research 37: 999-1013), shows a change in the simulated near-surface response. The performance of InHM for 15 R-5 events is also reported herein. The results from two stages of model calibration are presented. The uncertainty in initial soil-water content estimates for event-based simulation is shown to be a major limitation for physics-based models. The performance of InHM, relative to past event-based simulation efforts with a quasi-physically based rainfall-runoff model, is better for both peak stormflow and the time to peak stormflow, but worse for stormflow depth. The InHM simulations reported here set the stage for continuous simulation of near-surface response for the R-5 catchment with InHM.
Hundreds of hydrologic-response models have been developed during the last half-century. Each mod... more Hundreds of hydrologic-response models have been developed during the last half-century. Each model has its own advantages and shortcomings, with no single model accepted for all applications. More that 35 years ago Freeze and Harlan proposed a blueprint for a distributed physically-based hydrologic model, based upon numerical solution to the coupled partial differential equations that describe water movement on the
This stormwater management plan focuses on the cantonment and training areas of the Arden Hills A... more This stormwater management plan focuses on the cantonment and training areas of the Arden Hills Army Training Site (AHATS). The plan relates the site stormwater to the regulatory framework, and it summarizes best management practices to aide site managers in promoting clean site runoff. It includes documentation for a newly developed, detailed model of stormwater flow retention for the entire AHATS property and adjacent upgradient areas. The model relies on established modeling codes integrated in a U.S. Department of Defense-sponsored software tool, the Watershed Modeling System (WMS), and it can be updated with data on changes in land use or with monitoring data.
The impacts of logging on near-surface hydrologic response at the catchment and watershed scales ... more The impacts of logging on near-surface hydrologic response at the catchment and watershed scales were examined quantitatively using numerical simulation. The simulations were conducted with the Integrated Hydrology Model (InHM) for the North Fork of Caspar Creek Experimental Watershed, located near Fort Bragg, California. InHM is a comprehensive physics-based hydrologic-response model. The North Fork watershed (including 11 tributary catchments) is the site of an ongoing study monitoring the impacts of forest practices. InHM was parameterized and calibrated using existing data and new field measurements of soilhydraulic properties. Continuous long-term simulations were conducted for three wet seasons: before logging, after logging, and after a period of regrowth. Simulated increases in flow and peak discharges were considerably higher after clearcut harvesting. Concept-development simulations of cumulative watershed effects (CWEs) examined potential impacts of alternative timber harvest levels and methods relative to those that occurred in the North Fork watershed. Results from these simulations show that the increases in the simulated discharge after clearcutting were significant for the catchment and watershed scales and that relatively small changes in soil-hydraulic properties produced substantial changes in hydrologic response. The simulations in this study illustrate that timber harvesting can alter the streamflow generation mechanisms and patterns within a catchment.
The impacts of logging on near-surface hydrologic response at the catchment and watershed scales ... more The impacts of logging on near-surface hydrologic response at the catchment and watershed scales were examined quantitatively using numerical simulation. The simulations were conducted with the Integrated Hydrology Model (InHM) for the North Fork of Caspar Creek Experimental Watershed, located near Fort Bragg, California. InHM is a comprehensive physics-based hydrologic-response model. The North Fork watershed (including 11 tributary catchments) is the site of an ongoing study monitoring the impacts of forest practices. InHM was parameterized and calibrated using existing data and new field measurements of soilhydraulic properties. Continuous long-term simulations were conducted for three wet seasons: before logging, after logging, and after a period of regrowth. Simulated increases in flow and peak discharges were considerably higher after clearcut harvesting. Concept-development simulations of cumulative watershed effects (CWEs) examined potential impacts of alternative timber har...
... Hydrol. Process. 19, 13731398 (2005) Page 6. 1378 K. LOAGUE ET AL. event-based mode. The per... more ... Hydrol. Process. 19, 13731398 (2005) Page 6. 1378 K. LOAGUE ET AL. event-based mode. The performance of InHM is evaluated based upon observed streamflow and estimated soil-water content data. Two stages of model calibration were used in this study. ...
Concept-Development Simulation Two emerging and important disciplines within the large science of... more Concept-Development Simulation Two emerging and important disciplines within the large science of hydrology are hydroecology (Eagleson, 2002; Rodriguez-Iturbe and Porporato, 2004) and hydrogeomorphology (Sidle and Onda, 2004), each requiring an integrated ...
Abstract: This study quantitatively addresses, via simulation, the impacts of forest management p... more Abstract: This study quantitatively addresses, via simulation, the impacts of forest management practices on near-surface hydrologic response at the catchment and watershed scales. The simulations were conducted with the Integrated Hydrology Model ( ...
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