English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

. Decision making on water resources management at ungauged, especiallylarge-scale watersheds relies on hydrological modeling. Physically baseddistributed hydrological models require complicated setup, calibration, andvalidation processes, which may delay their acceptance among decision makers.This study presents an approach to develop a simple decision supporttool (DST) for decision makers and economists to evaluate multiyear impactsof land use change and best management practices (BMPs) on water quantity and quality for ungaugedwatersheds. The example DST developed in the present study was based onstatistical equations derived from Soil and Water Assessment Tool (SWAT)simulations and applied to a small experimental watershed in northwest NewBrunswick. The DST was subsequently tested against field measurements andSWAT simulations for a larger watershed. Results from DST could reproduceboth field data and model simulations of annual stream discharge and sedimentand nutrient loadings. The relative error of mean annual discharge andsediment, nitrate–nitrogen, and soluble-phosphorus loadings were  −6 , −52 ,27, and −16  %, respectively, for long-term simulation. Compared withSWAT, DST has fewer input requirements and can be applied to multiplewatersheds without additional calibration. Also, scenario analyses with DSTcan be directly conducted for different combinations of land use and BMPswithout complex model setup procedures. The approach in developing DST can beapplied to other regions of the world because of its flexible structure.

Developing a decision support tool for assessing land use change and BMPs in ungauged watersheds based on decision rules provided by SWAT simulation