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This form is filled out by Albert Kettner, based on the SPARROW website +
United States +
Model developer +
No but possible +
No but possible +
No but possible +
Single Processor +
Creation date"Creation date" is a predefined property that corresponds to the date of the first revision of a subject and is provided by <a target="_blank" rel="nofollow noreferrer noopener" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
16:06:46, 20 November 2009 +
SPARROW modeling requires the integration … 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).el studies (e.g., Reed and Stuckey, 2001). +
SPARROW is designed to describe the spatia … 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.</br></br>The SPARROW prediction metrics include constituent yields, concentrations, and source contributions to stream loads: </br>*Constituent yields</br>*Constituent concentrations</br>*Source contributions to stream loadsions
*Source contributions to stream loads +
Active +
SPARROW (SPAtially Referenced Regressions … SPARROW (SPAtially Referenced Regressions On Watershed attributes) is a watershed modeling technique for relating water-quality measurements made at a network of monitoring stations to attributes of the watersheds containing the stations. The core of the model consists of a nonlinear regression equation describing the non-conservative transport of contaminants from point and diffuse sources on land to rivers and through the stream and river network. The model predicts contaminant flux, concentration, and yield in streams and has been used to evaluate alternative hypotheses about the important contaminant sources and watershed properties that control transport over large spatial scales.ntrol transport over large spatial scales. +
Richard +
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0.79 +
model +, sparrow +, surface +, spatially referenced regressions +, relating water-quality measurements +, water-quality measurements made +, watershed modeling technique +, spatially referenced +, referenced regressions +, monitoring stations +, modeling technique +, technique for relating +, relating water-quality +, water-quality measurements +, measurements made +, nonlinear regression equation +, regression equation describing +, watershed attributes +, biogeochemistry + and water quality +
As code +
-- +
Single +
http://water.usgs.gov/nawqa/sparrow/ +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a target="_blank" rel="nofollow noreferrer noopener" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
02:18:40, 17 September 2020 +
36 +
The SPARROW Surface Water-Quality Model +
Binary +
12201 Sunrise Valley Drive, MS 413 +
20192 +
false +
false +
SAS Macro Language, SAS IML +
Other +
NOT SURE +
-- +
Through web repository +
http://water.usgs.gov/nawqa/sparrow/ +
1992 +
Windows +
Model developer +
