Describe input parameters
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SPARROW modeling requires the integration of many types of geospatial data for use as explanatory variables which are considered as either constituent sources or delivery factors. Sources might include certain land types such as urban area, or known contaminant sources such as sewage treatment plants. Delivery terms can include any basin characteristic that may be associated with natural attenuation. For example, denitrification is often associated with certain soil characteristics and the spatial pattern of those soil characteristics is often related to that of constituent loads. In some cases delivery terms might also be associated with enhanced delivery. For example, high basin slope might cause more rapid flows which could increase the delivery of constituents. Delivery is also influenced by the water time of travel in streams, which can be estimated from published USGS time-of-travel studies (e.g., Reed and Stuckey, 2001).
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Input format
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ASCII, Binary
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Other input format
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Describe output parameters
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SPARROW is designed to describe the spatial patterns in water quality and the factors that affect it. SPARROW models are developed using mass balance constraints to quantify the relation between stream constituent load (the mass of the constituent being transported by the stream) and the sources and losses of mass in watersheds. Thus the models are inherently designed to predict load (mass per time) for all stream reaches in the modeling region. However, the predictions of stream load can be modified to provide a variety of water-quality metrics that can support various types of assessments.
The SPARROW prediction metrics include constituent yields, concentrations, and source contributions to stream loads:
- Constituent yields
- Constituent concentrations
- Source contributions to stream loads
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Output format
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Binary
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Other output format
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Pre-processing software needed?
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No
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Describe pre-processing software
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--
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Post-processing software needed?
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No
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Describe post-processing software
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--
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Visualization software needed?
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No
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If above answer is yes
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Other visualization software
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