Spatial patterns of water quality impairments from point source nutrient loads in Germany's largest national River Basin (Weser River)

We employed the well-established Horton-Strahler, hierarchical, stream-order (ω) scheme to investigate scaling of nutrient loads (P and N) from ~845 wastewater treatment plants (WWTPs) distributed along the river network in urbanized Weser River, the largest national basin in Germany (~46K km2; ~8.4...

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Bibliographic Details
Published in:The Science of the total environment 2019-12, Vol.697, p.134145-134145, Article 134145
Main Authors: Yang, Soohyun, Büttner, Olaf, Kumar, Rohini, Jäger, Christoph, Jawitz, James W., Rao, P.S.C., Borchardt, Dietrich
Format: Article
Language:English
Subjects:
Dilution
Eutrophication
Hydrological alteration
In-stream nutrient uptake
Point source nutrient loads
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Summary:We employed the well-established Horton-Strahler, hierarchical, stream-order (ω) scheme to investigate scaling of nutrient loads (P and N) from ~845 wastewater treatment plants (WWTPs) distributed along the river network in urbanized Weser River, the largest national basin in Germany (~46K km2; ~8.4 million population). We estimated hydrologic and water quality impacts at the reach- and basin-scales, at two steady river discharge conditions (median flow, QR50; low-flow, QR90). Of the five WWTPs class-sizes (1 ≤ k ≤ 5), ~68% discharge to small low-order streams (ω 
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2019.134145