New Jersey WSC Archived Projects
To date SPARROW models have shown that land-to-water delivery losses of nutrients are significant. What processes are responsible for these 'losses' is uncertain. Certainly some of this 'loss' is storage and transport in groundwater systems. It is expected, and recent studies have suggested, that on local and regional scales topography and soil types are important factors in transport processes. The model as currently designed will explore factors that affect nutrient transport in the Delaware Basin.
START DATE: 01-JAN-2000
END DATE: 30-SEP-2011
PROJECT NUMBER: LJ00AER
STUDY OBJECTIVES:
The model as currently designed will explore factors that affect nutrient transport in the Delaware Basin. Major refinements being developed for the model that will make it more useful at a local level include:
- An improved stream network coverage so watersheds smaller than 60 square miles can be incorporated,
- Development of topographic and distance weighting factors for different land uses to simulate more realistic watershed processes,
- Development of an Access database for data preprocessing and manipulation.
SPARROW modeling will be used to:
- Assess the impacts of different land uses on nutrient transport and attenuation,
- Integrate data at different scales from various agencies as part of the CENR effort
STATEMENT OF PROBLEM:
To date SPARROW models have shown that land-to-water delivery losses of nutrients are significant. What processes are responsible for these 'losses' is uncertain. Certainly some of this 'loss' is storage and transport in groundwater systems. It is expected, and recent studies have suggested, that on local and regional scales topography and soil types are important factors in transport processes. In addition, the distance of a particular land use from a stream channel or point of measurement will influence transport and attenuation processes. By combining land-use, soils, topography, and distance in a GIS based weighting scheme it should be possible to determine what factors are important for over-land transport of different constituents. Inclusion of these factors in a regional SPARROW model will allow for a more rigorous exploration of land-to-water processes and allow for a more complete analysis of data for the CENR program.
STRATEGY AND APPROACH:
SPARROW modeling is a major part of the USGS/NAWQA contribution to the CENR effort. USGS personnel on the Delaware NAWQA study will develop the data sets and run the model. Assistance will be sought from USSG staff in Reston Virginia, and Baltimore, Maryland, who have previous experience with the model. Development of slope and distance weighting factors will be coordinated with on-going efforts in the New Jersey District. Acquisition of data sets from other agencies will be coordinated through the NAWQA/CENR effort. Work will be conducted in three phases:
- Develop regional data sets and conduct regional analysis using national model output,
- Develop smaller scale stream network and distance/slope weighting factors for Delaware Basin model,
- Incorporate NAWQA and other agency data into model for regional analysis.
DISCLAIMER: This webpage contains information about completed or inactive projects from the NJ Water Science Center. It has been created for historical purposes and may be a utility to locate published information. This page should not be considered an authoritative source. You are encouraged to contact the NJ WSC for more current information.
To date SPARROW models have shown that land-to-water delivery losses of nutrients are significant. What processes are responsible for these 'losses' is uncertain. Certainly some of this 'loss' is storage and transport in groundwater systems. It is expected, and recent studies have suggested, that on local and regional scales topography and soil types are important factors in transport processes. The model as currently designed will explore factors that affect nutrient transport in the Delaware Basin.
START DATE: 01-JAN-2000
END DATE: 30-SEP-2011
PROJECT NUMBER: LJ00AER
STUDY OBJECTIVES:
The model as currently designed will explore factors that affect nutrient transport in the Delaware Basin. Major refinements being developed for the model that will make it more useful at a local level include:
- An improved stream network coverage so watersheds smaller than 60 square miles can be incorporated,
- Development of topographic and distance weighting factors for different land uses to simulate more realistic watershed processes,
- Development of an Access database for data preprocessing and manipulation.
SPARROW modeling will be used to:
- Assess the impacts of different land uses on nutrient transport and attenuation,
- Integrate data at different scales from various agencies as part of the CENR effort
STATEMENT OF PROBLEM:
To date SPARROW models have shown that land-to-water delivery losses of nutrients are significant. What processes are responsible for these 'losses' is uncertain. Certainly some of this 'loss' is storage and transport in groundwater systems. It is expected, and recent studies have suggested, that on local and regional scales topography and soil types are important factors in transport processes. In addition, the distance of a particular land use from a stream channel or point of measurement will influence transport and attenuation processes. By combining land-use, soils, topography, and distance in a GIS based weighting scheme it should be possible to determine what factors are important for over-land transport of different constituents. Inclusion of these factors in a regional SPARROW model will allow for a more rigorous exploration of land-to-water processes and allow for a more complete analysis of data for the CENR program.
STRATEGY AND APPROACH:
SPARROW modeling is a major part of the USGS/NAWQA contribution to the CENR effort. USGS personnel on the Delaware NAWQA study will develop the data sets and run the model. Assistance will be sought from USSG staff in Reston Virginia, and Baltimore, Maryland, who have previous experience with the model. Development of slope and distance weighting factors will be coordinated with on-going efforts in the New Jersey District. Acquisition of data sets from other agencies will be coordinated through the NAWQA/CENR effort. Work will be conducted in three phases:
- Develop regional data sets and conduct regional analysis using national model output,
- Develop smaller scale stream network and distance/slope weighting factors for Delaware Basin model,
- Incorporate NAWQA and other agency data into model for regional analysis.
DISCLAIMER: This webpage contains information about completed or inactive projects from the NJ Water Science Center. It has been created for historical purposes and may be a utility to locate published information. This page should not be considered an authoritative source. You are encouraged to contact the NJ WSC for more current information.