| Water-resources optimization model for Santa Barbara, California T Nishikawa Journal of water resources planning and management 124 (5), 252-263, 1998 | 101 | 1998 |
| A new total variation diminishing scheme for the solution of advective‐dominant solute transport RA Cox, T Nishikawa Water Resources Research 27 (10), 2645-2654, 1991 | 87 | 1991 |
| Geohydrology, geochemistry, and ground-water simulation-optimization of the Central and West Coast Basins, Los Angeles County, California EG Reichard US Geological Survey, 2003 | 73 | 2003 |
| Stratigraphic controls on seawater intrusion and implications for groundwater management, Dominguez Gap area of Los Angeles, California, USA T Nishikawa, AJ Siade, EG Reichard, DJ Ponti, AG Canales, TA Johnson Hydrogeology journal 17 (7), 1699-1725, 2009 | 64 | 2009 |
| Simulation of ground-water flow in the Mojave River Basin, California CL Stamos, P Martin, T Nishikawa, BF Cox Water-Resources Investigations Report, 2001 | 58 | 2001 |
| Optimal pumping test design for the parameter identification of groundwater systems T Nishikawa, WWG Yeh Water Resources Research 25 (7), 1737-1747, 1989 | 47 | 1989 |
| Reduced order modeling of the Newton formulation of MODFLOW to solve unconfined groundwater flow SE Boyce, T Nishikawa, WWG Yeh Advances in Water Resources 83, 250-262, 2015 | 39 | 2015 |
| Combined use of flowmeter and time‐drawdown data to estimate hydraulic conductivities in layered aquifer systems RT Hanson, T Nishikawa Groundwater 34 (1), 84-94, 1996 | 39 | 1996 |
| Storage and mobilization of natural and septic nitrate in thick unsaturated zones, California JA Izbicki, AL Flint, DR O’Leary, T Nishikawa, P Martin, RD Johnson, ... Journal of Hydrology 524, 147-165, 2015 | 36 | 2015 |
| Comparison of ground-water flow model particle-tracking results and isotopic data in the Mojave River ground-water basin, southern California, USA JA Izbicki, CL Stamos, T Nishikawa, P Martin Journal of hydrology 292 (1-4), 30-47, 2004 | 35 | 2004 |
| Evaluation of the source and transport of high nitrate concentrations in ground water, Warren Subbasin, California T Nishikawa, JN Densmore, P Martin, JC Matti Water-Resources Investigations Report, 2018 | 33 | 2018 |
| Application of flowmeter and depth‐dependent water quality data for improved production well construction MA Gossell, T Nishikawa, RT Hanson, JA Izbicki, MA Tabidian, K Bertine Groundwater 37 (5), 729-735, 1999 | 29 | 1999 |
| Evaluation of geohydrologic framework, recharge estimates and ground-water flow of the Joshua Tree area, San Bernardino County, California T Nishikawa, JA Izbicki, JA Hevesi, CL Stamos, P Martin Scientific Investigations Report. U. S. Geological Survey, 2005 | 21 | 2005 |
| Optimal pump and recharge management model for nitrate removal in the Warren Groundwater basin, California YC Chiu, T Nishikawa, WWG Yeh Journal of Water Resources Planning and Management 136 (3), 299-308, 2010 | 20 | 2010 |
| Numerical simulation of ground-water flow and land subsidence at Edwards Air Force Base, Antelope Valley, California T Nishikawa, DL Rewis, P Martin US Department of the Interior, US Geological Survey 1 (4038), 2001 | 20 | 2001 |
| Simulation of groundwater and surface-water resources of the Santa Rosa Plain watershed, Sonoma County, California LR Woolfenden, T Nishikawa Scientific Investigations Report, 2014 | 19 | 2014 |
| Geology, ground-water hydrology, geochemistry, and ground-water simulation of the Beaumont and Banning storage units, San Gorgonio Pass Area, Riverside County, California DL Rewis, AH Christensen, J Matti, JA Hevesi, T Nishikawa, P Martin Scientific Investigations Report, 2006 | 18 | 2006 |
| Natural recharge estimation and uncertainty analysis of an adjudicated groundwater basin using a regional-scale flow and subsidence model (Antelope Valley, California, USA) A Siade, T Nishikawa, P Martin Hydrogeology Journal 23 (6), 1267, 2015 | 16 | 2015 |
| Testing alternative conceptual models of seawater intrusion in a coastal aquifer using computer simulation, southern California, USA T Nishikawa Hydrogeology journal 5, 60-74, 1997 | 16 | 1997 |
| Faulting and groundwater in a desert environment: constraining hydrogeology using time‐domain electromagnetic data PA Bedrosian, MK Burgess, T Nishikawa Near Surface Geophysics 11 (5), 545-555, 2013 | 15 | 2013 |
