Featured publications for the Madison aquifer
- Bartos, T.T., Halberg, L.L., and Ogle, K.M. (2002) Potentiometric surfaces, altitudes of the tops, and hydrogeology of the Minnelusa and Madison aquifers, Black Hills area, Wyoming: USGS Hydrologic Atlas 748, 4 p.
- Busby, J.F., Plummer, L.N., Lee, R.W., and Hanshaw, B.B. (1991) Geochemical evolution of water in the Madison Aquifer in parts of Montana, South Dakota, and Wyoming: USGS Professional Paper 1273-F, 89 p.
- Downey, J.S. (1984) Geohydrology of the Madison and associated aquifers in parts of Montana, North Dakota, South Dakota, and Wyoming: USGS Professional Paper 1273-G, 47 p.
- Long, A.J. (2009) Hydrograph separation for karst watersheds using a two-domain rainfall-discharge model: Journal of Hydrology, vol. 364, iss. 3-4, p. 249-256.
- Long, A.J., and Valder, J.F. (2011) Multivariate analyses with end-member mixing to characterize groundwater flow--Wind Cave and associated aquifers: Journal of Hydrology, vol. 409, iss. 1-2, p. 315-327.
- Long, A.J., and Putnam, L.D. (2009) Age-distribution estimation for karst groundwater--Issues of parameterizations and complexity in inverse modeling by convolution: Journal of Hydrology, vol. 376, iss. 3-4, p. 579-588.
- Long, A.J., and Gilcrease, P.C. (2009) A one-dimensional heat-transport model for conduit flow in karst aquifers: Journal of Hydrology, vol. 378, iss. 3-4, p. 230-239.
- Long, A.J., and Putnam, L.D. (2006) Translating CFC-based piston ages into probability density functions of ground-water age in karst: Journal of Hydrology, v. 330, p. 735-747.
- Long, A.J., and Putnam, L.D. (2002) Flow-system analysis of the Madison and Minnelusa aquifers in the Rapid City area, South Dakota--conceptual model: USGS Water-Resources Investigations Report 2002-4185, 100 p.
- Long, A.J., and Putnam, L.D. (2004) Linear model describing three components of flow in karst aquifers using 18O data: Journal of Hydrology, v. 296, p. 254-270.
- Long, A.J., and Derickson, R.G. (1999) Linear systems analysis in a karst aquifer: Journal of Hydrology, vol. 219, p. 206-217.
- Long, A.J., Sawyer, J.F., and Putnam, L.D. (2008) Environmental tracers as indicators of karst conduits in groundwater in South Dakota, USA: Hydrogeology Journal, vol. 16, iss. 2, p. 263-280.

