Submitted to: ASAE Annual International Meeting
Publication Type: Proceedings
Publication Acceptance Date: July 31, 2002
Publication Date: July 31, 2002
Citation: MALONE, R.W., BONTA, J.V., LIGHTELL, D.R. A LOW-COST COMPOSITE WATER SAMPLER FOR DRIP AND STREAM FLOW. ASAE ANNUAL INTERNATIONAL MEETING. 2002. Paper No. 022148.
The collection of flow proportional samples when flow rates range from slow drip flow to slow stream flow is important in hydrology. A slot sampler was modified for this purpose and its field/lab performance was monitored. The major design criteria include: function for flow rates between 0.5 and 200 mL/min; minimize sampler catch variance between trials; allow total flow volume estimate from sampler catch volume; compact in size; useful in remote conditions; low cost; low maintenance; and easily constructed from readily obtainable materials. The designed sampler collected approximately 2.0% of flow with a sampler catch coefficient of variation between trials of less than 5%. This allows total flow rate to be estimated and flow proportional samples for water quality analysis to be collected.