Pontificia Universidad Católica de Chile Pontificia Universidad Católica de Chile
Bonilla C.A., Kroll D.G., Norman J.M., Yoder D.C., Molling C.C., Miller P.S., Panuska J.C., Topel J.B., Wakeman P.L., Karthikeyan K.G. (2006)

Instrumentation for measuring runoff, sediment and chemical losses from agricultural fields

Revista : Journal of Environmental Quality
Volumen : 35
Número : 1
Páginas : 216–223
Tipo de publicación : ISI


This work describes a simple, passive sampling system for measuring runoff, sediment, and chemical losses from typical agricultural fields. The sampler consists of a 5 to 7 m wide runoff collector connected to a series of multislot divisors. These divisors split the flow into aliquots, providing a continuous sampling during the runoff event. Divisors were located in a wooden box below ground level. With an adequate pump, this system can operate in fields with a slope gradient as low as 2%, and can stay in the field during winter to record first snowmelt-generated runoff. A radio transmitter reports by telemetry the occurrence and magnitude of any runoff event, and indicates when the system should be sampled and emptied. This article includes a description of the equipment, advantages, and disadvantages based on 2 yr of operation, and examples of data collected.