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Modeling Volcanic Mudflow Travel Time with Arcgis Pro and Arcgis Network Analyst

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Modeling Volcanic Mudflow Travel Time with Arcgis Pro and Arcgis Network Analyst Modeling Volcanic Mudflow Travel Time with ArcGIS Pro and ArcGIS Network Analyst What You Will Need • An ArcGIS Pro 2.0 or 2.1 license • ArcGIS Network Analyst license • Sample dataset from the ArcUser website (esri.com/arcuser). • Access to the Internet By Mike Price, Entrada/San Juan, Inc. Right-click Maps > Open to open Lahar_ Model_01. All modeling in this tutorial will be done in map view. Select the highest velocity flowlines located high on Mount Baker that begin at Lahar 01 Origin. 50 au Fall 2017 esri.com Hands On This tutorial uses modified NHD Stream, River, and Artificial Path vectors to model lahar travel in the Nooksack River drain- age. The flowlines are edited in one area to allow the network to cross a minor drainage divide and enter the Sumas River drainage. For more information about NHD or to obtain NHD data, visit the Hydrography page of The National Map at nhd.usgs.gov/ index.html. Getting Started Download the sample dataset archive, Cause_V_Lahar.zip, from the ArcUser web- site to a local machine and extract the data. This archive contains several file geodata- bases, a prepared stream centerline dataset, A prebuilt network dataset using selected NHD flowlines that was prepared and included in the sample dataset should be loaded to create a service area analysis layer. and an MXD document that will be import- ed into ArcGIS Pro. Start ArcGIS Pro, make sure you have an ArcGIS Network Analyst license avail- On November 15 and 16, 2017, lahars in several drainage systems. able and active, and create a new Blank public safety agencies in the United States This tutorial introduces a special use of project. When prompted to Create a New and Canada and supporting government ArcGIS Network Analyst, an ArcGIS Pro Project, name it Lahar_Model and store it and industry entities plan to conduct a train- extension, to route and measure a lahar in Cause_V_Lahar\GDBFiles\UTM83Z10. ing and proof-of-concept exercise along the originating above the Middle Fork of the Make sure you store the new project in this westernmost border between the United Nooksack River. The travel model uses pre- folder. States and Canada called the Canada-US built stream flowlines developed from the Once the new project has opened, click the Enhanced Resiliency Experiment (CAUSE) V. the National Hydrography Dataset (NHD). Insert tab, then click Import Map. Navigate This is the fifth in a series of CAUSE exercis- The empirical timing used in the exercise to Cause_V_Lahar, select Lahar_Model_01. es held since 2011. was developed from the study of a similar mxd, and click OK. This exercise will involve a hypotheti- lahar that resulted from the May 1980 erup- Once it has opened, inspect the imported cal crater collapse on Mount Baker, a tion of Mount St. Helens, also in Washington. map. It uses the same layout as the origi- 10,781-foot (or 3,286-meter) dormant com- For more information about CAUSE V, see nal map, and its current extent shows the posite volcano, located approximately 30 the accompanying article, “Testing Cross- Nooksack River flowing west from Mount miles (49 kilometers) east of Bellingham, Border Disaster Response Coordination.” Baker into Puget Sound. Also, notice that Washington. Now ready for deployment, it For background information on Mount this map shows Johnson Creek and the will simulate the effects of several major Baker, see the accompanying article “Mount Sumas River flowing northeast into British structural collapse events near the moun- Baker (Briefly).” Columbia. Inspect the Cities, Towns, and tain’s summit. The seismic activity that Census Designated Places (CDPs) and would accompany these events would result Modeling Lahar Flow with NHD CAUSE V Lahar Zones layers and turn in volcanic mud and debris flows (lahars), Flowlines on the NHD Flowlines layer. Look at the riverine flooding, landslides, and other This tutorial uses data from NHD, which Collapse Points layer, and note the two col- natural phenomena. Data from these events is managed by the US Geological Survey lapse points located on Mount Baker and at will be synthesized and sequenced to test (USGS) as part of The National Map. NHD the Lahar 01 Origin. response and recovery capabilities of the US is a high-resolution compilation of drain- Open the Catalog pane, right-click Maps > and Canadian emergency agencies. age networks and related features, includ- Open to open Lahar_Model_01. All modeling A significant result of the crater collapse ing rivers, streams, lakes, ponds, glaciers, in this tutorial will be done in map view. would be several lahars, first in the western and dams. Flowline data provided by NHD On the Map ribbon, click the Basemap Nooksack River drainage and later in the includes seamless stream centerlines and dropdown, and select Terrain with Labels. Baker/Skagit River system of Mount Baker’s nonflowing water centerlines. Flowline con- Although the Canadian terrain will flash eastern side. A key part will include mod- nectivity and directionality support hydro- momentarily and then disappear, the labels eling the extent and travel times of these logic network modeling. for the area remain visible. esri.com Fall 2017 au 51 Testing Cross-Border Disaster Response Coordination In 2011, Canada and the United States began holding a series volcanic and seismic activity and has emitted steam and ash. A of exercises to test communication technologies and information- mid-November eruption causes an initial collapse of Sherman sharing tools. Crater, located near the mountain’s summit. To date, four of these Canada-United States Enhanced Resiliency The initial collapse sends a volcanic debris flow, or lahar, down Experiment (CAUSE) exercises have been conducted along the the Middle Fork of the Nooksack River to Puget Sound and north- US-Canada border, with the fifth and final experiment, CAUSE V, ward along the Sumas River into Canada. A second eastern col- scheduled for November 15 and 16, 2017. CAUSE V will be con- lapse generates multiple lahar flows down the east flank of Mount ducted along the Washington-British Columbia border. Baker, into the Baker and Skagit River system. The CAUSE exercises are a collaboration between the US CAUSE V will evaluate the communication, hazard monitoring, Department of Homeland Security Science and Technology (S&T) and emergency warning systems, including the interagency coor- Directorate and Defence Research and Development Canada dination and public notification associated with this event. It will Centre for Security Science. test response and recovery activities by local, state, provincial, The disaster driving the scenario for the CAUSE V exercise is and federal providers. that a volcanic explosion and crater collapse has occurred on The experiment emphasizes cross-border communication and Mount Baker, located 37 miles (60 kilometers) inland and less than coordination. Observers in the United States will include the 15 miles (25 kilometers) south of the US-Canada border. Federal Emergency Management Agency (FEMA), the FirstNet This scenario spans several months in the second half of 2017. communications group, and US Northern Command. During that time, Mount Baker has been the site of increased Using NHD Flowlines to Define NHD Flowlines, clipped along the Nooksack expression creator. Create an expression Lahar Travel corridor. This dataset was filtered prior to choosing KPH for Field, then is Equal to, and In the Contents pane on the left side of the CAUSE V event to create the network select 120 as Value. the interface, highlight NHD Flowlines dataset that will be used in this model. Click Run to select all records in which Selected, right-click, and open its attribute Close the attribute table and turn off the KPH is Equal to 120. table. Select individual records and study NHD Flowlines All layer. Turn on the NHD This selection includes the highest veloc- their attributes. Zoom in to check NHD Flowlines Lahar 01 layer and open its attrib- ity flowlines located high on Mount Baker flowlines in and near the communities of ute table. Notice that this prepared dataset that begin at Lahar 01 Origin. In imperial Everson and Nooksack. There is a very low includes the same polyline data as NHD units, 120 KPH is approximately 75 miles per drainage divide between the Nooksack Flowlines Selected. The difference is that its hour (MPH) or nearly 110 feet per second. River and Johnson Creek. The CAUSE V attribute table supports time and distance Click the Map tab and use the Lahar 01 model will deflect part of the lahar flow out network modeling. Sort the KPH (kilometers Origin 1:50,000 bookmark to zoom in and of the Nooksack drainage into the Johnson per hour) field in descending order. identify any flowline segment immediately Creek/Sumas River drainage, and the flow below Lahar 01 Origin. Verify that all units will continue across the border between the Selecting High Velocity Flowlines are metric and that the velocity is 120 KPH. United States and Canada and flow toward On the ribbon, click the Table tab then Notice the very short travel times. the Fraser River. Selection by Attributes. Use the bookmark for Everson Nooksack Next, close the attribute table and turn In the Select Layer by Attributes 1:100,000 to zoom in and observe the con- off NHD Flowlines Selected. Turn on NHD Geoprocessing pane, make sure Layer Name structed flowline vectors connecting the Flowlines All. In the Contents pane, expand or Table View is set to NHD Flowline Lahar Nooksack River with Johnson Creek and the legend for NHD Flowlines All and open 01 and Selection type is set to New selection. Sumas River. These segments allow the its attribute table. These polylines are raw Click the Add Clause button to bring up the lahar to travel over the Everson divide and 52 au Fall 2017 esri.com Hands On continue north toward the Fraser River.
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