A low-cost system for calibrating methodologies used to measure GW-SW flow

Abstract

Exchange fluxes across the groundwater–surface-water interface are critical components of hydrologic, climatic, and ecologic processes. We present details of the construction of a low-cost Controlled Flux Tank Calibration System (CFTCS). The construction of this low-cost ($318) easily replicable system allows for comparative testing of different groundwater flow measurement methodologies. This work presents an illustrated step-by-step construction guide and intends to contribute to the development of studies on the groundwater monitoring in coastal lagoons.