00:04Hello everyone -- in this video, we will introduce the Flood Planning Map...

00:08...available in the ArcGIS for Local Government Resource Center.

00:13The Flood Planning Map is intended to provide flood planners with a set of tools...

00:16...and workflows to prepare for seasonal river flooding.

00:20These tools and workflows are based on real-world scenarios...

00:23...that have been used in previous flood years.

00:25Flood planning can be conducted weeks or months in advance of the predicted flood.

00:30This advance notice can save time in planning for protecting infrastructure and...

00:34...facilities or evacuating citizens within the impact area.

00:39In this video, we will demonstrate an overview of the sample data and tools provided with...

00:44...the map, how to determine the flood impact areas based on their predicted flood levels... to identify public infrastructure, critical facilities, and vulnerable citizens that could... impacted, and how to create a budgetary cost estimate...

01:00...for proposed levees to mitigate the flood impact area.

01:04When you download the Flood Planning Map, you will get a multi-scale ArcMap document...

01:09...designed for editing, an Add-In for the Editing Toolbar, a toolbox containing two...

01:15...scripts for automating the flood-planning analysis, the Local Government...

01:19...Geodatabase with sample data from the city of Naperville, Illinois, and two documents...

01:24...including the Getting Started and Using Flood Planning Map.

01:29The Flood Planning Map comes preconfigured with sample data and tools.

01:34The sample data includes: a Flood Planning Basemap, which is preconfigured... multiple scale levels; a Flood Management group layer, including...

01:45...Inundation Areas, which are derived from hydrologic models; Flood Impact Areas... this case, derived at 6, 8, and 10 feet above flood stage...

01:55...Municipal Boundaries and temporary Levees.

01:59The Public Infrastructure includes Sewer and Stormwater layers...

02:05...the Vulnerable Population includes locations of special-need citizens...

02:10...and the Critical Facilities includes things like municipal buildings, parks, and fire stations.

02:18Two flood-planning tools are included in the Flood Planning toolbox.

02:23Each tool is part of an overall workflow...

02:25...and executed in sequence as indicated by their names.

02:29The first tool is called Step 1 or Create Flood Impact Area, executes a Python script...

02:35...contained in the script folder, which intersects the Flood Inundation Area...

02:39...with the municipal or jurisdictional boundary.

02:42The second tool, called Step 2 or Create Flood Impact Plan, also executes a...

02:47...Python script, which intersects features from the selected layer with the Flood Impact Area... populate the Flood Impact Plan.

02:56The first step is to determine the extent of the potential flood impact to your community.

03:02This is accomplished by intersecting the pre-defined inundation polygons...

03:06...with municipal or jurisdictional boundary.

03:09The example inundation data provided...

03:11...includes a feature class with several flood levels.

03:15First, select the Inundation Features; then, select the Flood Level.

03:22In this case, we're going to select 5...

03:24...because we already have flood levels 6, 8, and 10 defined.

03:28Then, select Administrative Area.

03:31We're going to select the Municipal Boundaries.

03:34Then, enter a flood area name, and select OK to execute the script.

03:48When the script is completed...

03:49...a new polygon feature is added to the Flood Impact Area feature class.

03:53...a new polygon feature is added to the Flood Impact Areas feature class.

03:55You can see here we have a new polygon feature with Flood Level 5.

04:00The new impact area will be intersected with the Census Blocks to determine the...

04:05...approximate number of people impacted and added as an attribute to the record.

04:11Repeat this process to create additional impact areas as necessary.

04:15It is wise to create several impact areas for multiple flood levels.

04:20These impact areas will be used in subsequent tools... identify the flood impact in your community.

04:26After the impact areas have been created, you can begin to identify features that will be...

04:30...potentially impacted at each flood level.

04:33In this step...

04:34...we will identify Storm sewer layers that have been impacted at Flood Level 5.

04:39We begin by selecting our Input Features... we select the StormDischargePoints from the list.

04:45Then we select the Flood Impact Area and the Flood Level.

04:52We enter in the Flood Level Name we gave and the Target Impact Table...

05:00...which is the FloodImpactPlan.

05:02Then we select OK to execute the script.

05:07The results are written to the FloodImpactPlan, which will be assigned...

05:12...action items to protect the community assets.

05:21To view the results on the map, we will need to create a table join between the...

05:24...FloodImpactPlan and the Storm Discharge Points.

05:29The join will be created using the Facility Identifier with the FloodImpactPlan...

05:36...using the Feature ID field; we'll leave the Join Option set to Keep all records... ensure that we can see the impacted features at all flood levels.

05:45After the join has been completed...

05:47...we can create custom symbology to show the impact.

05:52We'll use the Flood Level field that came from the join; Add All Values, and remove the null...

05:58...values, so that we can see them only at the flood levels that we've selected.

06:04I'm going to use a color ramp to be consistent with the other feature classes.

06:21I've already done the Storm Gravity Means, so we'll turn those on so we can see...

06:25...the features that are impacted at each of these flood levels.

06:30A levee feature class is provided with the Local Government Information Model.

06:35You can use this feature class to load your levees into -- if you have previously...

06:38...created them or received them from an engineering firm.

06:42In addition, a feature template is provided to create levee features if you don't have any.

06:47To create a levee, use the Start Editing option in the Editing toolbar.

06:52The Levees Feature template has several material types that you can use.

06:56Select one of the material types and then a construction tool.

07:01Draw in where you want your levee to go and double-click when it's finished.

07:09And don't forget to save your edits.

07:12It is important to understand this is not an engineering design tool...

07:15...but a flood-planning tool and should be used for that purpose.

07:19The Levee Feature tool does not tell you...

07:20...where to place your levee or how to build them.

07:23But it does help you determine...

07:24...what the effect of levee-mitigation efforts will be to your community.

07:29The Attribute Assistant add-in can be used to assign attributes and calculate the cost...

07:34...estimate for levee materials.

07:36Select the Attributes button in the Editing toolbar to open up the Editing window.

07:41You can see our materials set to Clay.

07:44We're going to enter in a Height of 10 feet for this new levee, a Bottom Width of 30 feet...

07:50...a Top Width, 8 feet, and a Side Slope of 3:1.

07:54For the Location Description, I will just enter "on south side of the river."

08:01You can see that the Cubic Yard has been calculated for us.

08:04And a default value of $35 for cubic yard material.

08:08We can override this if we have a different number.

08:14And now we have a budgetary cost estimate for a new levee.

08:20There are a number of ways to share the results...

08:22...of our flood-planning analysis with others.

08:25You can print a map and give it to staff who do not have internet access.

08:31You can create a map package and upload it to your ArcGIS Online account... be shared with others who have ArcGIS, or you can publish a map service... be used inside a web-based application.

08:50In this short video, we have introduced the Flood Planning Map...

08:53...and demonstrated how it can be used in preparation for seasonal river flooding.

08:57We encourage you to try the map...

08:59...with sample data using the documents provided with the download.

09:02After you have used the Flood Planning Map, you can configure it with your data.

09:06We look forward to hearing your feedback.

09:08Thanks for taking the time to watch this video.

Copyright 2016 Esri
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How to use the Flood Planning Map

Walter Potts introduces ArcGIS for Local Government's Flood Planning map which include an ArcMap editing map, editor extension, and set of editing workflows and tools for creating and managing flood planning data.


  • Recorded: Apr 10th, 2012
  • Runtime: 09:16
  • Views: 6620
  • Published: Apr 17th, 2012
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Comments  (15)

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Sorry - best available topographic data using LIDAR. Here's a good article that explains||POSTBY||Walter Potts (
MattDriscoll  (Staff Comment) 1 Year ago
Hello Ming;
The inundation polygons for the sample data were create using a Digital Elevation Model (DEM). Typically, flood inundation data is created as a result of a hydrological study of a "reach" of the river using the best available topographic data from LIDAR. Here is a good article on how to create flood inundation data from NOAA.

||POSTBY||Walter Potts (
MattDriscoll  (Staff Comment) 1 Year ago
It is a wonderful presentation!
Everything is prepared before the demonstration, I have a question about the data used here.
Can you find me a instruction for creating inundation Areas layer? It's a great layer, so I want to know how you guys create it, and what kind of data I need to create one for our town.

||POSTBY||Ming (
MattDriscoll  (Staff Comment) 1 Year ago
Thanks for your comment. The sample data provided with the Flood Planning download is in the NAD_1983_HARN_StatePlane_Illinois_East_FIPS_1201 coordinate system. If your data is in another coordinate system you will need to go into the data frame properties to change it. Help on this topic can be found here
Also, you can contact technical support if you need further ***istance. Hope this helps.||POSTBY||wpotts (
MattDriscoll  (Staff Comment) 1 Year ago
Hello, I know this video is old so I hope that someone reads it.
I have been recently introduced to ArcGIS through a subject I'm doing in my university and we're required to do maps using the program.
I downloaded the zip of the flood planning tool and I have it in the ArcToolBox, and I did everything you said in the video, a Layer appears but it's in a different area of the map.
The projected coordinates system that I'm using is
my question is, where could I get the tool corresponding my zone?
because when I downloaded it, I couldn't change the location.
Thank you very much in advanced,
Sara||POSTBY||Sara (
MattDriscoll  (Staff Comment) 1 Year ago
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