Journal article
Paired riparian water table monitoring to quantify hydraulic loading to a saturated buffer
Environmental monitoring and assessment, Vol.194(7), pp.506-506
07/01/2022
DOI: 10.1007/s10661-022-10134-4
PMID: 35705832
Abstract
The use of saturated buffers for reducing NO
-N loads from tile-drained croplands is increasing in the US Midwest and there is a need to develop options for estimating reductions at riparian sites. In this study, we present a paired water table monitoring approach to estimate hydraulic and NO
-N loading into a saturated buffer in eastern Iowa. One well was located within the saturated buffer (treatment) and a second well was installed in the same section of the riparian buffer but without the saturated buffer (control). Over a season of monitoring, water table depths were remarkably consistent between the two wells but the water table beneath the saturated buffer was consistently 0.22 m higher than the non-saturated buffer control. The increase in water table height increased the amount of water discharged from a 162 m long buffer by 468.2 m
/year and, assuming concentration reduction of 15 mg/l, resulted in a N reduction of approximately 7 kg. Although more work is needed to document this paired monitoring approach elsewhere, the method may hold promise for inexpensively quantifying the performance of conservation practices at landowner-led sites.
Details
- Title: Subtitle
- Paired riparian water table monitoring to quantify hydraulic loading to a saturated buffer
- Creators
- Keith E Schilling - Iowa Geological Survey, University of Iowa, Iowa City, IA, 52242, USA. keith-schilling@uiowa.edu.Matthew T Streeter - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Environmental monitoring and assessment, Vol.194(7), pp.506-506
- DOI
- 10.1007/s10661-022-10134-4
- PMID
- 35705832
- ISSN
- 0167-6369
- eISSN
- 1573-2959
- Grant note
- SSCWQC:19IGS / Iowa Department of Agriculture
- Language
- English
- Date published
- 07/01/2022
- Academic Unit
- Earth and Environmental Sciences; IIHR--Hydroscience and Engineering
- Record Identifier
- 9984383919802771
Metrics
8 Record Views