{"id":1011832,"date":"2026-08-21T17:00:57","date_gmt":"2026-08-22T00:00:57","guid":{"rendered":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&p=1011832"},"modified":"2026-08-21T17:04:44","modified_gmt":"2026-08-22T00:04:44","slug":"map-in-a-minute-flood","status":"publish","type":"blog","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood","title":{"rendered":"Map in a minute: Map floods using ArcGIS Online and ArcGIS Living Atlas"},"author":7641,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":""},"categories":[22941,37121],"tags":[33371],"industry":[],"product":[36581,36551],"class_list":["post-1011832","blog","type-blog","status-publish","format-standard","hentry","category-mapping","category-real-time","tag-map-viewer","product-arcgis-living-atlas","product-arcgis-online"],"acf":{"short_description":"How to make a flood map in a minute (maybe less) using ArcGIS Online and ArcGIS Living Atlas.","flexible_content":[{"acf_fc_layout":"content","content":"

This blog article was originally published on September 17, 2020, and has been updated. The last previous update was January 4, 2023. <\/em><\/p>\n

In the news: Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Just a week ago, heavy rains hit Indiana, causing rivers to crest and setting water level records as roads and bridges were severely damaged or washed out entirely by the flood waters.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980705,"id":2980705,"title":"fld-21","filename":"fld-21.png","filesize":299899,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-21.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-21","alt":"National Weather Service map","author":"7641","description":"","caption":"View larger image","name":"fld-21","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 00:15:51","modified":"2026-08-21 00:16:07","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1200,"height":675,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-21-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-21.png","medium-width":464,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-21.png","medium_large-width":768,"medium_large-height":432,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-21.png","large-width":1200,"large-height":675,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-21.png","1536x1536-width":1200,"1536x1536-height":675,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-21.png","2048x2048-width":1200,"2048x2048-height":675,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-21-826x465.png","card_image-width":826,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-21.png","wide_image-width":1200,"wide_image-height":675}},"image_position":"left-center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-21.png"},{"acf_fc_layout":"content","content":"

According to NOAA, flooding is the major threat for inland populations. Flash flooding can occur in the blink of an eye due to intense rainfall, often accumulating from some distance away. Flooding along rivers and streams can last for many days after a storm has passed.<\/p>\n"},{"acf_fc_layout":"content","content":"

Make a flood map<\/h2>\n

ArcGIS Living Atlas of the World<\/a> includes authoritative live feeds and other content that helps you learn more about current and predicted flood conditions. Follow these steps to make your own flood map in a minute (or less) using Living Atlas content.<\/p>\n

Step 1<\/strong>\u00a0\u2014 Sign in to your ArcGIS account and open Map Viewer. There are two ways to add layers from the Content (dark) toolbar:<\/p>\n

(1) Click\u00a0Add<\/strong>, then\u00a0Browse layers<\/strong>.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":1810152,"id":1810152,"title":"fld-2","filename":"fld-2.png","filesize":13690,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-2.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-2","alt":"Browse layers","author":"7641","description":"","caption":"","name":"fld-2","status":"inherit","uploaded_to":1011832,"date":"2023-01-05 00:14:12","modified":"2023-01-05 00:14:24","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":393,"height":236,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-2-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-2.png","medium-width":393,"medium-height":236,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-2.png","medium_large-width":393,"medium_large-height":236,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-2.png","large-width":393,"large-height":236,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-2.png","1536x1536-width":393,"1536x1536-height":236,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-2.png","2048x2048-width":393,"2048x2048-height":236,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-2.png","card_image-width":393,"card_image-height":236,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-2.png","wide_image-width":393,"wide_image-height":236}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

or (2) Click Layers<\/strong>, then\u00a0Add<\/strong>.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":1810182,"id":1810182,"title":"fld-3","filename":"fld-3.png","filesize":20971,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-3.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-3","alt":"Add","author":"7641","description":"","caption":"","name":"fld-3","status":"inherit","uploaded_to":1011832,"date":"2023-01-05 00:16:50","modified":"2023-01-05 00:16:59","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":488,"height":386,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-3-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-3.png","medium-width":330,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-3.png","medium_large-width":488,"medium_large-height":386,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-3.png","large-width":488,"large-height":386,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-3.png","1536x1536-width":488,"1536x1536-height":386,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-3.png","2048x2048-width":488,"2048x2048-height":386,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-3.png","card_image-width":488,"card_image-height":386,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/03\/fld-3.png","wide_image-width":488,"wide_image-height":386}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

Step 2<\/strong>\u00a0\u2014 Choose\u00a0Living Atlas<\/strong>\u00a0from the Add layer drop-down.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980748,"id":2980748,"title":"fld-25","filename":"fld-25.png","filesize":17684,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-25.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-25","alt":"Living Atlas search","author":"7641","description":"","caption":"","name":"fld-25","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 20:53:59","modified":"2026-08-21 20:54:08","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":521,"height":482,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-25-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-25.png","medium-width":282,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-25.png","medium_large-width":521,"medium_large-height":482,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-25.png","large-width":521,"large-height":482,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-25.png","1536x1536-width":521,"1536x1536-height":482,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-25.png","2048x2048-width":521,"2048x2048-height":482,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-25-503x465.png","card_image-width":503,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-25.png","wide_image-width":521,"wide_image-height":482}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

Step 3<\/strong> \u2014 Enter \u201cstream gauges\u201d in search to locate matching layers from Living Atlas. Scroll down to locate the Live Stream Gauges<\/strong> layer and click [+ Add]<\/strong> to add it to the map.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980754,"id":2980754,"title":"fld-26","filename":"fld-26.png","filesize":17078,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-26.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-26","alt":"Add layer","author":"7641","description":"","caption":"","name":"fld-26","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 21:04:03","modified":"2026-08-21 21:04:12","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":517,"height":421,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-26-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-26.png","medium-width":321,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-26.png","medium_large-width":517,"medium_large-height":421,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-26.png","large-width":517,"large-height":421,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-26.png","1536x1536-width":517,"1536x1536-height":421,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-26.png","2048x2048-width":517,"2048x2048-height":421,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-26.png","card_image-width":517,"card_image-height":421,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-26.png","wide_image-width":517,"wide_image-height":421}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

Tip:<\/strong> To learn more about any layer, click the layer card to view the item summary or description.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980757,"id":2980757,"title":"fld-27","filename":"fld-27.png","filesize":32738,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-27.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-27","alt":"View layer details","author":"7641","description":"","caption":"View larger image","name":"fld-27","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 21:10:53","modified":"2026-08-21 21:13:11","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":832,"height":465,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-27-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-27.png","medium-width":464,"medium-height":259,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-27.png","medium_large-width":768,"medium_large-height":429,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-27.png","large-width":832,"large-height":465,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-27.png","1536x1536-width":832,"1536x1536-height":465,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-27.png","2048x2048-width":832,"2048x2048-height":465,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-27-826x462.png","card_image-width":826,"card_image-height":462,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-27.png","wide_image-width":832,"wide_image-height":465}},"image_position":"left-center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-27.png"},{"acf_fc_layout":"content","content":"

From the Live Stream Gauges item overview<\/a> we learn that the layer shows near real-time stream gauge readings compiled from a variety of sources. The layer is updated hourly. Once added to the map, the legend shows the current flood status.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980760,"id":2980760,"title":"fld-28","filename":"fld-28.png","filesize":9663,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-28.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-28","alt":"Live stream gauges legend","author":"7641","description":"","caption":"","name":"fld-28","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 21:16:20","modified":"2026-08-21 21:16:37","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":490,"height":341,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-28-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-28.png","medium-width":375,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-28.png","medium_large-width":490,"medium_large-height":341,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-28.png","large-width":490,"large-height":341,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-28.png","1536x1536-width":490,"1536x1536-height":341,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-28.png","2048x2048-width":490,"2048x2048-height":341,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-28.png","card_image-width":490,"card_image-height":341,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-28.png","wide_image-width":490,"wide_image-height":341}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

To simplify the map and focus on stream gauges showing flood conditions, a filter can be applied.<\/p>\n

Step 4<\/strong> \u2014 Ensure that the Live Stream Gauges layer is selected, then click Filter<\/strong> in the Settings (light) toolbar on the right. Note there is an existing expression that filters for gauges with recent updates.<\/p>\n

Click Add new<\/strong>.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980761,"id":2980761,"title":"fld-29","filename":"fld-29.png","filesize":16671,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-29.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-29","alt":"Add new expression","author":"7641","description":"","caption":"","name":"fld-29","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 21:20:46","modified":"2026-08-21 21:20:55","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":502,"height":650,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-29-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-29.png","medium-width":202,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-29.png","medium_large-width":502,"medium_large-height":650,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-29.png","large-width":502,"large-height":650,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-29.png","1536x1536-width":502,"1536x1536-height":650,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-29.png","2048x2048-width":502,"2048x2048-height":650,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-29-359x465.png","card_image-width":359,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-29.png","wide_image-width":502,"wide_image-height":650}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

Step 5<\/strong>\u00a0\u2014 Construct a filter expression as follows:<\/p>\n

a<\/strong>\u00a0\u2013 Select\u00a0Status<\/strong>\u00a0as the attribute from the list.<\/p>\n

b<\/strong>\u00a0\u2013 Select\u00a0includes<\/strong>\u00a0as the operator from the dropdown list.<\/p>\n

c<\/strong> \u2013 Click Select values.<\/strong><\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980762,"id":2980762,"title":"fld-30","filename":"fld-30.png","filesize":5569,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-30.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-30","alt":"Add expression","author":"7641","description":"","caption":"","name":"fld-30","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 21:33:59","modified":"2026-08-21 21:34:15","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":305,"height":286,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-30-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-30.png","medium-width":278,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-30.png","medium_large-width":305,"medium_large-height":286,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-30.png","large-width":305,"large-height":286,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-30.png","1536x1536-width":305,"1536x1536-height":286,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-30.png","2048x2048-width":305,"2048x2048-height":286,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-30.png","card_image-width":305,"card_image-height":286,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-30.png","wide_image-width":305,"wide_image-height":286}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

d<\/strong> \u2013 Select the desired values from the drop-down list. In this case we want to focus on minor, major, and moderate flood status. When finished your selections, click Done<\/strong>.<\/p>\n

 <\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980763,"id":2980763,"title":"fld-31","filename":"fld-31.png","filesize":5102,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-31.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-31","alt":"Value selections","author":"7641","description":"","caption":"","name":"fld-31","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 21:43:13","modified":"2026-08-21 21:43:27","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":277,"height":290,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-31-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-31.png","medium-width":249,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-31.png","medium_large-width":277,"medium_large-height":290,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-31.png","large-width":277,"large-height":290,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-31.png","1536x1536-width":277,"1536x1536-height":290,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-31.png","2048x2048-width":277,"2048x2048-height":290,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-31.png","card_image-width":277,"card_image-height":290,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-31.png","wide_image-width":277,"wide_image-height":290}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

Step 6<\/strong> \u2014 The new filter should look like the one shown below. Click\u00a0Save<\/strong>.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980764,"id":2980764,"title":"fld-32","filename":"fld-32.png","filesize":7338,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-32.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-32","alt":"Save expression","author":"7641","description":"","caption":"","name":"fld-32","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 21:43:43","modified":"2026-08-21 21:43:52","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":313,"height":497,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-32-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-32.png","medium-width":164,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-32.png","medium_large-width":313,"medium_large-height":497,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-32.png","large-width":313,"large-height":497,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-32.png","1536x1536-width":313,"1536x1536-height":497,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-32.png","2048x2048-width":313,"2048x2048-height":497,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-32-293x465.png","card_image-width":293,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-32.png","wide_image-width":313,"wide_image-height":497}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

The map shown below is the result of applying the following expression: Current Status includes Minor Flood, Major Flood, Moderate Flood. Click any gauge to view its pop-up for more information.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980767,"id":2980767,"title":"fld-33s","filename":"fld-33s.png","filesize":73822,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-33s.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-33s","alt":"","author":"7641","description":"","caption":"View larger image","name":"fld-33s","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 21:51:34","modified":"2026-08-21 21:51:57","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":600,"height":306,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-33s-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-33s.png","medium-width":464,"medium-height":237,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-33s.png","medium_large-width":600,"medium_large-height":306,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-33s.png","large-width":600,"large-height":306,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-33s.png","1536x1536-width":600,"1536x1536-height":306,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-33s.png","2048x2048-width":600,"2048x2048-height":306,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-33s.png","card_image-width":600,"card_image-height":306,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-33s.png","wide_image-width":600,"wide_image-height":306}},"image_position":"left-center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-33-1.png"},{"acf_fc_layout":"content","content":"

Step 7<\/strong> \u2014 Return to Add layer<\/strong> from Living Atlas and search using the string “water forecast.” Scroll down to locate the National Water Model Maximum Flow (10 Day Forecast)<\/strong> layer. Click [+Add]<\/strong> to add it to the map.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980771,"id":2980771,"title":"fld-35","filename":"fld-35.png","filesize":14654,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-35.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-35","alt":"Add layer from Living Atlas","author":"7641","description":"","caption":"","name":"fld-35","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 22:27:26","modified":"2026-08-21 22:27:40","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":495,"height":375,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-35-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-35.png","medium-width":345,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-35.png","medium_large-width":495,"medium_large-height":375,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-35.png","large-width":495,"large-height":375,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-35.png","1536x1536-width":495,"1536x1536-height":375,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-35.png","2048x2048-width":495,"2048x2048-height":375,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-35.png","card_image-width":495,"card_image-height":375,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-35.png","wide_image-width":495,"wide_image-height":375}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

From the National Water Model Maximum Flow (10 Day Forecast)<\/a> item details we learn that the layer presents a summarization from the National Water Model 10-Day forecast, including maximum flow per river segment and the day and time of maximum flow for the contiguous United States.<\/p>\n"},{"acf_fc_layout":"content","content":"

Step 8<\/strong> \u2014 Adjust the layer order to draw the gauges on top of the river and stream segments.<\/p>\n

In Layers<\/strong> on the Contents (dark) toolbar, grab the Live Stream Gauges layer and drag it above the National Water Model layer.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980776,"id":2980776,"title":"fld-36","filename":"fld-36.png","filesize":9163,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-36.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-36","alt":"Reorder layers","author":"7641","description":"","caption":"","name":"fld-36","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 22:37:06","modified":"2026-08-21 22:37:14","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":496,"height":286,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-36-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-36.png","medium-width":453,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-36.png","medium_large-width":496,"medium_large-height":286,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-36.png","large-width":496,"large-height":286,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-36.png","1536x1536-width":496,"1536x1536-height":286,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-36.png","2048x2048-width":496,"2048x2048-height":286,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-36.png","card_image-width":496,"card_image-height":286,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-36.png","wide_image-width":496,"wide_image-height":286}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

Click any river or stream segment to display the pop-up with more information.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980782,"id":2980782,"title":"fld-38","filename":"fld-38.png","filesize":30650,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-38.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-38","alt":"Forecast pop-up","author":"7641","description":"","caption":"","name":"fld-38","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 22:54:06","modified":"2026-08-21 22:54:30","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":592,"height":451,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-38-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-38.png","medium-width":343,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-38.png","medium_large-width":592,"medium_large-height":451,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-38.png","large-width":592,"large-height":451,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-38.png","1536x1536-width":592,"1536x1536-height":451,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-38.png","2048x2048-width":592,"2048x2048-height":451,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-38.png","card_image-width":592,"card_image-height":451,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-38.png","wide_image-width":592,"wide_image-height":451}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

In a minute or so with just a few clicks, a map showing current flood conditions and 10-day forecast summaries has been authored.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2980789,"id":2980789,"title":"fld-39","filename":"fld-39.png","filesize":191576,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-39.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/map-in-a-minute-flood\/fld-39","alt":"Flood map","author":"7641","description":"","caption":"View larger image","name":"fld-39","status":"inherit","uploaded_to":1011832,"date":"2026-08-21 23:11:01","modified":"2026-08-21 23:11:14","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1597,"height":814,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-39-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-39.png","medium-width":464,"medium-height":237,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-39.png","medium_large-width":768,"medium_large-height":391,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-39.png","large-width":1597,"large-height":814,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-39-1536x783.png","1536x1536-width":1536,"1536x1536-height":783,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-39.png","2048x2048-width":1597,"2048x2048-height":814,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-39-826x421.png","card_image-width":826,"card_image-height":421,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-39.png","wide_image-width":1597,"wide_image-height":814}},"image_position":"left-center","orientation":"horizontal","hyperlink":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/01\/fld-39.png"},{"acf_fc_layout":"content","content":"

Improve your map<\/h2>\n

Experiment with different basemaps to see which you like best. You can alter layer transparency and symbols to emphasize the content you want. Add other related layers<\/a> from Living Atlas to add additional context.<\/p>\n"},{"acf_fc_layout":"content","content":"

More information<\/h2>\n

For more information, see the following:<\/p>\n