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A better overall understanding of consumptive use (CU) in the Delta is critical not only to water rights administration, but also to water project management, agricultural irrigation management, and to environmental and water quality protection. The purpose of this project is to develop a better understanding of CU in the Delta, to coordinate efforts and information derived from independent research efforts, and to consolidate information about methods for measuring CU within the Delta. The Center for Watershed Sciences will gather, analyze, and disseminate data about actual direct evaporation and plant transpiration in the Delta (sometimes referred to as evapotranspiration, or ET) and organize and use the ET data to facilitate comparative tests of up to seven selected methods for measuring CU:<\/p>\n
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In addition, CWS will access existing and emerging data developed under other ongoing research efforts to augment and inform the CU investigation. The CWS will coordinate with independent researchers so as to benefit from their parallel efforts to provide more comprehensive understanding of CU in the Delta. <\/p>\n\n
Additionally, a study to compare Actual Evapotranspiration (ET) estimates between Landsat 8 coarse resolution (30 meters-pixel) and unmanned aerial vehicle (UAV) fine resolution (1.0 meter-pixel) was carried out in crops of alfalfa, pasture and maize. Findings showed that ET mapping at high resolution delivers relevant data that is not possible to detect at Landsat 8 scale. UAV showed higher level of ET spatial variability (up to 75.3 and 45.4% for Max-Min values respectively), which in practical terms represents valuable information to detect areas of crop stress, salinity, differential infiltration, responses to water management at field scale, problems with lack of uniformity in water and fertilizer applications, among others. <\/p>[\/et_pb_text][et_pb_text _builder_version=”4.16″ text_line_height=”1.8em” text_orientation=”justify” max_width=”600px” module_alignment=”center” text_text_align=”justify” locked=”off” global_colors_info=”{}”]
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Principal Investigators<\/strong>: Josu\u00e9 Medell\u00edn-Azuara, Kyaw Tha Paw U, Yufang Jin, and Jay R. Lund<\/p>\n <\/p>\n Report Preparation and Research Assistance:<\/strong> Jesse Jankowski, Eric Kent, Jenae’ Clay, Andy Wong, Andrew Bell, Nicholas Santos, and\u00a0Jessica Badillo, University of California, Davis<\/p>\n <\/p>\n Other Collaborators and Research Support From:<\/strong> Michael George, Delta Watermaster,\u00a0California State\u00a0Water Resources Control Board, Commissioned by the Office of the Delta Watermaster<\/p>\n <\/p>\n Field Campaign Group:<\/strong> Kyaw Tha Paw U, Eric Kent, Jenae’ Clay, Michelle Leinfelder-Miles, Jean-Jacques Lambert, Megan McAuliffe, David Edgar, Sean Freiberg, Ruolan Gong, Megan Metz, Cayle Little, Bekele Temegsen<\/p>\n <\/p>\n CalSIMETAW:<\/strong> Morteza Orang, Richard L. Snyder, Quinn Hart, Sara Sarreshteh, and Simon Eching<\/p>\n <\/p>\n DETAW:<\/strong> Tariq Kadir\u00a0and Lan Liang<\/p>\n <\/p>\n DisALEXI:<\/strong> Martha Anderson<\/p>\n <\/p>\n ITRC:<\/strong> Daniel Howes<\/p>\n <\/p>\n SIMS:<\/strong> Forest Melton, Alberto Guzm\u00e1n, Lee Johnson, Carolyn Rosevelt, and Kirk Post<\/p>\n <\/p>\n UCD-METRIC:<\/strong> Nadya Alexander, Nicholas Santos, Andrew Bell, Justin Merz\u00a0and Quinn Hart<\/p>\n <\/p>\n UCD-PT:<\/strong> Yufang Jin, Andy Wong<\/p>\n <\/p>\n Unmanned Aerial Vehicles:<\/strong> J. Andr\u00e9s Morand\u00e9, Ricardo Trezza, Andreas Anderson, Kyaw Tha Paw U, Yufang Jin, Josu\u00e9 Medell\u00edn-Azuara, Jesse Jankowski, Jessica Badillo, Joshua H. Viers, YangQuan Chen<\/p>\n <\/p>\n WRF-ACASA:<\/strong> Kyaw Tha Paw U, Eric Kent, Jenae’ Clay, Rex David Pyles<\/p>\n <\/p>\n Peer Review Panel:<\/strong> <\/p>\n <\/p>\n <\/p>\n <\/p>\n Medell\u00edn-Azuara, J.<\/a>, Paw U, K.T.<\/a>, Jin, Y.<\/a>, Jankowski, J.<\/a>, Bell, A.M.<\/a>, Kent, E., Clay, J., Wong, A., Alexander, N.<\/a>, Santos, N., Badillo, J.<\/a>, Hart, Q.<\/a>, Leinfelder-Miles, M., Merz, J., Lund, J.R.<\/a>, Anderson, A.<\/a>, Anderson, M., Chen, Y.<\/a>, Edgar, D., Eching, S., Freiberg, S., Gong, R., Guzm\u00e1n, A., Howes, D., Johnson, L., Kadir, T., Lambert, J.J., Liang, L., Little, C., Melton, F., Metz, M., Morand\u00e9, J.A., Orang, M., Pyles, R.D., Post, K., Rosevelt, C., Sarreshteh, S., Snyder, R.L., Trezza, R., Temegsen, B., Viers, J.H.<\/a> (2018). A Comparative Study for Estimating Crop Evapotranspiration in the Sacramento-San Joaquin Delta. Center for Watershed Sciences, University of California Davis.<\/p>\n <\/p>\n <\/p>\n
Richard Allen, Byron Clark, Richard L. Snyder\u00a0and Thomas Trout<\/p>\n
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