{"id":2653,"date":"2025-06-01T22:10:29","date_gmt":"2025-06-02T05:10:29","guid":{"rendered":"https:\/\/ahssymposium.org\/2026\/?page_id=2653"},"modified":"2026-06-19T06:13:49","modified_gmt":"2026-06-19T13:13:49","slug":"groundwater-model-workshop","status":"publish","type":"page","link":"https:\/\/ahssymposium.org\/2026\/groundwater-model-workshop\/","title":{"rendered":"Groundwater Model Workshop"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; custom_padding_last_edited=&#8221;on|phone&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#184D68&#8243; background_image=&#8221;https:\/\/ahssymposium.org\/2026\/wp-content\/uploads\/workshop.png&#8221; background_size=&#8221;contain&#8221; background_position=&#8221;top_right&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; custom_padding_tablet=&#8221;0px||0px||false|false&#8221; custom_padding_phone=&#8221;0px||0px||false|false&#8221; background_color_tablet=&#8221;#184D68&#8243; 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_module_preset=&#8221;default&#8221; max_width=&#8221;1332px&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;24px&#8221; text_line_height=&#8221;1.3em&#8221; header_2_font=&#8221;|600||on|||||&#8221; header_2_text_align=&#8221;center&#8221; header_2_text_color=&#8221;#184D68&#8243; header_2_font_size=&#8221;51px&#8221; text_orientation=&#8221;center&#8221; module_alignment=&#8221;center&#8221; custom_margin=&#8221;||-3px|||&#8221; text_font_size_tablet=&#8221;24px&#8221; text_font_size_phone=&#8221;24px&#8221; text_font_size_last_edited=&#8221;on|phone&#8221; header_2_font_size_tablet=&#8221;36px&#8221; header_2_font_size_phone=&#8221;36px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Introduction to Building and Running Groundwater Models<\/h2>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; max_width=&#8221;1332px&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;24px&#8221; text_line_height=&#8221;1.3em&#8221; header_2_font=&#8221;|600|||||||&#8221; header_2_font_size=&#8221;36px&#8221; max_width=&#8221;1332px&#8221; module_alignment=&#8221;center&#8221; custom_margin=&#8221;14px||10px||false|false&#8221; text_font_size_tablet=&#8221;24px&#8221; text_font_size_phone=&#8221;24px&#8221; text_font_size_last_edited=&#8221;on|phone&#8221; header_2_font_size_tablet=&#8221;36px&#8221; header_2_font_size_phone=&#8221;33px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Workshop Description<\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Arial||||||||&#8221; text_text_color=&#8221;#000000&#8243; text_font_size=&#8221;22px&#8221; text_line_height=&#8221;1.2em&#8221; custom_margin=&#8221;21px|||||&#8221; text_font_size_tablet=&#8221;24px&#8221; text_font_size_phone=&#8221;19px&#8221; text_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><span style=\"font-weight: 400;\">This course will give students knowledge necessary for setting up, executing and using groundwater models. The half-day workshop will focus on using the use of groundwater models to model groundwater flow and transport. The groundwater model MODFLOW will be used as the primary modeling tool, but other surface water and groundwater models will be discussed. Students will be guided through example models using accessible files. Discussion of calibration of groundwater models and other more advanced topics will be included.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><u>Who should attend:<\/u><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Practicing hydrologists<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Civil and water resources engineers<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Students interested in expanding their modeling toolkit beyond traditional approaches.<\/span><\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Arial||||||||&#8221; text_text_color=&#8221;#247E99&#8243; text_font_size=&#8221;24px&#8221; text_line_height=&#8221;1.2em&#8221; text_orientation=&#8221;center&#8221; custom_padding=&#8221;40px|30px|50px|30px|false|false&#8221; text_font_size_tablet=&#8221;24px&#8221; text_font_size_phone=&#8221;19px&#8221; text_font_size_last_edited=&#8221;on|phone&#8221; border_width_all=&#8221;6px&#8221; border_color_all=&#8221;#247E99&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><strong>Instructor: <\/strong><br \/>Nathan Miller &amp; Justin Clark<\/p>\n<p><strong>Time \/ Date: <\/strong><br \/><span style=\"font-weight: 400;\">September 9, 2026, 12:30 PM to 4:30 PM<\/span><\/p>\n<p><strong>Location: <\/strong><br \/>City of Flagstaff Water Services, 2323 Walgreens Street, Suite 100 Flagstaff, AZ 86004<\/p>\n<p>Free parking, park on south side of building and enter through double doors<\/p>\n<p><strong>Limit: <\/strong><br \/>20 people (first-come, first-served)<\/p>\n<p><strong>Cost: <\/strong><br \/>See below; Early Bird pricing ends August 12th<\/p>\n<p><strong>PDHs: <\/strong><br \/>4<\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;https:\/\/members.azhydrosoc.org\/event-6735256&#8243; url_new_window=&#8221;on&#8221; button_text=&#8221;Register Today!&#8221; button_alignment=&#8221;center&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; custom_button=&#8221;on&#8221; button_text_size=&#8221;26px&#8221; button_text_color=&#8221;#FFFFFF&#8221; button_bg_color=&#8221;#184D68&#8243; button_border_width=&#8221;0px&#8221; button_border_radius=&#8221;0px&#8221; button_font=&#8221;&#8211;et_global_heading_font||||||||&#8221; custom_margin=&#8221;-62px|||||&#8221; custom_padding=&#8221;0px|50px|5px|50px|false|false&#8221; button_text_size_tablet=&#8221;39px&#8221; button_text_size_phone=&#8221;21px&#8221; button_text_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; max_width=&#8221;1332px&#8221; custom_css_free_form=&#8221;.couroutlinetabno table, .couroutlinetabno table td, .couroutlinetabno table tr {||  border:none!important;||  padding:10px;||}&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_2&#8243; module_class=&#8221;couroutlinetabno&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#184D68&#8243; custom_padding=&#8221;|10px||10px|false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;24px&#8221; text_line_height=&#8221;1.3em&#8221; header_2_font=&#8221;|600||on|||||&#8221; header_2_text_color=&#8221;#FFFFFF&#8221; header_2_font_size=&#8221;36px&#8221; max_width=&#8221;1332px&#8221; module_alignment=&#8221;center&#8221; custom_margin=&#8221;22px||10px||false|false&#8221; text_font_size_tablet=&#8221;24px&#8221; text_font_size_phone=&#8221;24px&#8221; text_font_size_last_edited=&#8221;on|phone&#8221; header_2_font_size_tablet=&#8221;36px&#8221; header_2_font_size_phone=&#8221;36px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Course Outline<\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Arial||||||||&#8221; text_text_color=&#8221;#FFFFFF&#8221; text_font_size=&#8221;22px&#8221; custom_margin=&#8221;|35px|26px|33px|false|false&#8221; custom_padding=&#8221;16px|3px|21px||false|false&#8221; border_width_all=&#8221;2px&#8221; border_color_all=&#8221;#FFFFFF&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-weight: 400;\">Modeling Overview \u2013 modeling terminology, model types, groundwater model usage and justification, MODFLOW versions, and examples of Arizona groundwater flow models<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-weight: 400;\"> MODFLOW Examples \u2013 hands-on use of seven test different test models<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-weight: 400;\"> MODFLOW Data Extraction and Visualization \u2013 extracting data from list, heads, and budget files; introduction to FloPy; connecting model output to maps<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-weight: 400;\"> Advanced Topics \u2013 particle tracking (MODPATH) and contaminant transport (MT3D), 3D visualization techniques, integrated surface water\u2013groundwater modeling, and model calibration using PEST<\/span><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Arial||||||||&#8221; text_text_color=&#8221;#FFFFFF&#8221; text_font_size=&#8221;22px&#8221; header_text_color=&#8221;#FFFFFF&#8221; header_2_text_color=&#8221;#FFFFFF&#8221; custom_padding=&#8221;|||6px|false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2><strong>Course Requirements:<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Participants must bring:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\"> Laptop (Windows recommended; macOS or Linux supported upon request)<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> Your favorite text editor installed (TextPad preferred)<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> Microsoft Excel (preferred) or Google Sheets<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\"><\/span><\/p>\n<h2><strong>Provided by Instructors:<\/strong><\/h2>\n<ul>\n<li><span style=\"font-weight: 400;\"> Example model files, input data, and exercise materials \u2013 no prior modeling experience required \u2022 GitHub repository: https:\/\/github.com\/JustinClarkHydrologist\/AHS-Intro-to-Modeling-Course<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> Command Line usage tutorial, provided in GitHub repository. To be completed before course<\/span><\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Arial||||||||&#8221; text_font_size=&#8221;22px&#8221; text_line_height=&#8221;1.3em&#8221; header_2_font=&#8221;|600|||||||&#8221; header_2_font_size=&#8221;36px&#8221; max_width=&#8221;1332px&#8221; module_alignment=&#8221;center&#8221; custom_margin=&#8221;14px||10px||false|false&#8221; custom_padding=&#8221;0px||||false|false&#8221; text_font_size_tablet=&#8221;24px&#8221; text_font_size_phone=&#8221;24px&#8221; text_font_size_last_edited=&#8221;on|phone&#8221; header_2_font_size_tablet=&#8221;36px&#8221; header_2_font_size_phone=&#8221;33px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Instructor Nathan Miller<\/h2>\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ahssymposium.org\/2026\/wp-content\/uploads\/Nathan-300x300.png\" width=\"202\" height=\"202\" alt=\"\" class=\"wp-image-4656 alignleft size-medium\" srcset=\"https:\/\/ahssymposium.org\/2026\/wp-content\/uploads\/Nathan-300x300.png 300w, https:\/\/ahssymposium.org\/2026\/wp-content\/uploads\/Nathan-150x150.png 150w, https:\/\/ahssymposium.org\/2026\/wp-content\/uploads\/Nathan.png 365w\" sizes=\"(max-width: 202px) 100vw, 202px\" \/>Nathan Miller is a graduate of the University of Arizona and serves as the Corporate Board President of the Arizona Hydrological Society. Nathan has worked in the consulting business in Arizona since 1999. In his current role as Vice President \u2013 Groundwater Modeling Services for Matrix New World Engineering he leads the Arizona team and directs groundwater modeling services for the company. Mr. Miller combines his technical proficiency in hydrogeology and groundwater modeling with an understanding of Arizona\u2019s key regulatory policies affecting the use of groundwater to serve municipalities, water utilities, developers, and regulatory agencies. Mr. Miller serves as technical lead and primary interface for several high-profile groundwater resources investigations<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Contact: nmiller@mnwe.com<\/span><\/p>\n<p><span>\u00a0<\/span><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Arial||||||||&#8221; text_font_size=&#8221;22px&#8221; text_line_height=&#8221;1.3em&#8221; header_2_font=&#8221;|600|||||||&#8221; header_2_font_size=&#8221;36px&#8221; max_width=&#8221;1332px&#8221; module_alignment=&#8221;center&#8221; custom_margin=&#8221;14px||10px||false|false&#8221; custom_padding=&#8221;0px||||false|false&#8221; text_font_size_tablet=&#8221;24px&#8221; text_font_size_phone=&#8221;24px&#8221; text_font_size_last_edited=&#8221;on|phone&#8221; header_2_font_size_tablet=&#8221;36px&#8221; header_2_font_size_phone=&#8221;33px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Instructor Justin Clark<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ahssymposium.org\/2026\/wp-content\/uploads\/Justin-300x300.png\" width=\"214\" height=\"214\" alt=\"\" class=\"wp-image-4657 alignleft size-medium\" srcset=\"https:\/\/ahssymposium.org\/2026\/wp-content\/uploads\/Justin-300x300.png 300w, https:\/\/ahssymposium.org\/2026\/wp-content\/uploads\/Justin-150x150.png 150w, https:\/\/ahssymposium.org\/2026\/wp-content\/uploads\/Justin.png 365w\" sizes=\"(max-width: 214px) 100vw, 214px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Justin Clark is a groundwater hydrogeologist with 13 years of experience specializing in groundwater modeling, geochemistry, and environmental data analysis. His expertise includes model calibration, sensitivity and uncertainty analyses, and developing tools for processing large environmental datasets. He earned a bachelor\u2019s degree from the University of Arizona and a master\u2019s degree from the University of Waterloo. In his current role as Senior Hydrogeologist at Luhdorff &amp; Scalmanini he applies advanced modeling and data analysis to provide actionable insights for groundwater resource management.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Contact: jclark2008@gmail.com<\/span><\/p>\n<p><span>\u00a0<\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;3px||||false|false&#8221; da_disable_devices=&#8221;off|off|off&#8221; global_colors_info=&#8221;{}&#8221; da_is_popup=&#8221;off&#8221; da_exit_intent=&#8221;off&#8221; da_has_close=&#8221;on&#8221; da_alt_close=&#8221;off&#8221; da_dark_close=&#8221;off&#8221; da_not_modal=&#8221;on&#8221; da_is_singular=&#8221;off&#8221; da_with_loader=&#8221;off&#8221; da_has_shadow=&#8221;on&#8221;][et_pb_row _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; max_width=&#8221;1332px&#8221; 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