title: Using Sealed Wells to Measure Water Levels Beneath Streams and Floodplains.
abstract: The design of wells beneath streams and floodplains has often employed with tall standpipes to prevent incursion of surface water into the well during flood events. Here, an approach has been presented to minimise the infrastructure demands in these environments by sealing the well top (e.g., prevent water entering the well) and monitor the total pressure in the water column using an absolute (non-vented) pressure transducer. The sealed well design was tested using a laboratory experiment where the total pressure responses were monitored in both an unsealed and sealed well, while the water level was varied. It is observed that, whether the well is sealed or not, the total pressure at a given depth in the aquifer will be equal to that within the well. This indicates that the sealed well design is a viable alternative to tall standpipes and also facilitates installation of wells beneath streams and floodplains.
authors: National Centre for Groundwater Research and Training (NCGRT), School of the Environment, Flinders University, GPO Box 2100, Adelaide, SA, 5001, Australia.
authors: Saskia L
authors: SL
authors: Noorduijn
authors: National Centre for Groundwater Research and Training (NCGRT), School of the Environment, Flinders University, GPO Box 2100, Adelaide, SA, 5001, Australia.|Water for a Healthy Country Flagship, Commonwealth Scientific and Industrial Research Organisation, Division of Land and Water, Adelaide, SA, Australia.
authors: Peter G
authors: PG
authors: Cook
authors: National Centre for Groundwater Research and Training (NCGRT), School of the Environment, Flinders University, GPO Box 2100, Adelaide, SA, 5001, Australia.
authors: Cameron
authors: C
authors: Wood
authors: National Centre for Groundwater Research and Training (NCGRT), School of the Environment, Flinders University, GPO Box 2100, Adelaide, SA, 5001, Australia.
authors: Nick
authors: N
authors: White
mesh_terms: D004784:Environmental Monitoring / Q000295:instrumentation* / Q000379:methods; D011312:Pressure; D045483:Rivers; D060986:Water Wells