I have retired and “rewired” myself to a blend of service as President of the Geological Society of America (my Presidential Address) consulting (https://indiescientists.com/),and indulging in humanities; playing jazz and writing fiction. What teaching I do now will be in the form of short courses and possibly Maymester courses. 

My Current Research Thrusts Include:

• Development of lump-parameter and other modeling approaches to characterize non-point contamination and solute transport where data availability is minimal in real world applications
• Spring and seepage face hydrology
• Isotopic and other geochemical analysis of water and solutes to characterize contaminant sources including PFAS compounds, MBTE and or organic compounds.
• Exploring Storytelling to communicate science with the public

1. Gao, P., Wang, Z.Y. and Siegel, D.I. ,2015. Spatial and temporal changes of sedimentation in Three Gorges Reservoir of China. Lakes and Reservoirs: Research and Management, 20, pp.1-10.
2. Siegel, D.I., Smith, B., Perry, E., Bothun, R. and Hollingsworth, M., 2015. Pre-drilling water-quality data of groundwater prior to shale gas drilling in the Appalachian Basin: Analysis of the Chesapeake Energy Corporation dataset. Applied Geochemistry, 63, pp.37-57.
3. Gracz, M.B., Moffett, M.F., Siegel, D.I. and Glaser, P.H., 2015. Analyzing peatland discharge to streams in an Alaskan watershed: An integration of end-member mixing analysis and a water balance approach. Journal of Hydrology, 530, pp.667-676.
4. Christian, K., Lautz, L.K. Hoke. G.D., Siegel, D.I.. Lu. Z. and J. Kessler, 2015. Methane occurrence is associated with sodium-rich valley waters in domestic wells overlying the Marcellus shale in New York State, Water Resources Research, DOI: 10.1002/2015WR017805.
5. Smith. B., Becker, M., and D.I. Siegel, 2016, Temporal Variability of Methane in Domestic Groundwater Wells, Northeastern Pennsylvania, Environmental Geosciences, vol. v. 23, p. 49– 80.
6. Gracz, M.B., Moffett, M.F., Siegel, D.I. and Glaser, P.H., 2015. Analyzing peatland discharge to streams in an Alaskan watershed: An integration of end-member mixing analysis and a water balance approach. Journal of Hydrology, 530, pp.667-676.
7. Christian, K., Lautz, L.K. Hoke. G.D., Siegel, D.I.. Lu. Z. and J. Kessler, 2015. Methane occurrence is associated with sodium-rich valley waters in domestic wells overlying the Marcellus shale in New York State, Water Resources Research, DOI: 10.1002/2015WR017805
8. Siegel, D.I., Smith, B., Perry, E., Bothun, R. and M. Hollingsworth, 2016, Dissolved methane in shallow groundwater of the Appalachian Basin: Results from the Chesapeake Energy predrilling geochemical database, Environmental Geosciences, v. 23, pp. 1– 47.
9. Levy, Z. F., Siegel D.I., Glaser PH, Samson S.D., Dasgupta. S.S.. 2016. Peat porewaters have contrasting geochemical fingerprints for groundwater recharge and discharge due to matrix diffusion in a large, northern bog-fen complex. Journal of Hydrology, vol. 541, p. 941–951.
10. Glaser, P.H., Siegel, D.I. , 2016, Climate-Driven Shifts in the Vertical Transport of Solutes Through Deep Peat Deposits Alter Methane Production Zones in a Large Peat Basin, Global Biogeochemical Cycles, vol. 30, p. 1578-1598
11. Levy, Z.F., Siegel, D.I., Glaser, P.H., Samson, S.D. and Dasgupta, S.S., 2016. Peat porewaters have contrasting geochemical fingerprints for groundwater recharge and discharge due to matrix diffusion in a large, northern bog-fen complex. Journal of Hydrology, 541, pp.941-951.
12. Levy, Z.F., Rosenberry, D.O., Moucha, R., Mushet, D.M., Goldhaber, M.B., LaBaugh, J.W., Fiorentino, A.J. and Siegel, D.I., 2018. Drought-induced recharge promotes long-term storage of porewater salinity beneath a prairie wetland. Journal of hydrology, 557, pp.391-406.
13. Levy, Z.F., Mills, C.T., Lu, Z., Goldhaber, M.B., Rosenberry, D.O., Mushet, D.M., Lautz, L.K., Zhou, X. and Siegel, D.I., 2018. Using halogens (Cl, Br, I) to understand the hydrogeochemical evolution of drought-derived saline porewater beneath a prairie wetland. Chemical Geology, 476, pp.191-207.