Crustal Geophysics and Geochemistry Science Center

Integrated Methods Development Project

Geochemical Methods - Development of the MiniSipper, a Segmented Water Sampler

Subtask Objectives

Most estimates of total maximum daily loads (TMDLs) of toxic metals in streams impacted by acid mine drainage are based on a few synoptic (grab) samples combined with stream flow data. However, many important episodic loading events, such as seasonal meltwater and storms, occur on timescales that are rarely observed by traditional sampling approaches.

The goal of this subtask develop a new continuous autonomous integrating water sampler for geochemical hazard monitoring which will provide critical TMDL data for toxic metals in streams affected by acid mine drainage.

Planned Work

  1. Further improvement of bubble separation between samples.
  2. Development of an event response MiniSipper.
  3. Development of a Borehole MiniSipper.



  • Chapin, T.P., and Todd, A.S., 2010, MiniSipper: a New High-Capacity, Long-duration, Automated In-Situ Water Sampler for Acid Mine Drainage Monitoring: Geological Society of America Abstracts with Programs, Vol. 42, No. 5, p. 203.

Contact Information

Thomas Chapin
Box 25046 MS 964 Denver Federal Center
Denver, CO 80225-0046
Phone: 303-236-5795
Email: Thomas Chapin

The use of firm, trade, and brand names is for identification purposes only and does not constitute endorsement by the U.S. government.

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Mineral Resources Program
Eastern Central GMEG Alaska Minerals Information Crustal Geophysics and Geochemistry Spatial Data