8  Level-1 Initial Channel Analysis

๐ŸŸข Beginner

The purpose of this SOP is to demonstrate the workflow of fluvial geomorphology (fluvgeo) rapid watershed assessment in ArcGIS Pro. This approach uses a suite of planning analysis tools to rapidly assess and identify sediment sources, pathways, and sinks for watershed analysis. Level 1 is to extract basic channel dimensions. This stage develops terrain, defines the stream reach, creates cross sections and identifies features along the reach. The output is a report of the dimensions for each cross section on a reach.

Application and Data Setup

๐Ÿ”ง Practical

Applications

  1. ArcGIS Pro mapping application with adequate system privileges ArcGIS Pro w/Admin Privileges to install and update toolsets.
  2. R, Rstudio and Rtools to run the Fluvgeo tools in ArcGIS Pro.
  3. LAStools Production toolbox from RapidLasso.

Retreive the FluvGeo Toolbox from GITHUB

  1. Get the latest version of the toolbox from this page under Releases. ArcGIS Toolbox
  2. Place the install in a location that all required applications can access.
  3. In ArcCatalog open the Fluvgeo toolbox and under install click Install R Package box and Hit run.
Note

For more detailed installation information refer to FluvialGeomorph Tech Manual

Data access in ArcGIS Pro

  1. Fluvgeo toolbox requires the use of a mapped drive for accessing the data in ArcGIS Pro. UNC connection will create errors with some of the Fluvgeo tools.
  2. Work on project on the local drive and when completed move to final location. Local processing in ArcGIS Pro is preferred.

Data

  1. An existing stream site location, desired distance and area for stream buffer. Lidar data is also needed for 2 different years.
  2. An example would be projects for Illinois_SSRP_Sites_2004_2016 use a standard 1-mile length up and down stream of the site and 100-foot buffer around the 1-mile stream length.
  3. These values can be set to any desired length and area for each site. The analysis tools require a length of stream and a buffered area of elevation data to complete the analysis.

Gather data โ€“ A few Lidar data retrieval samples

Data will need to be gathered from the most appropriate source for each reach location. The hydrologist requesting the analysis would know potential sources. Make sure you gather data well beyond the site.

Note

The lidar data will need to cover the entire floodplain. Ideally gather data to the upward slope on the outer edge of the floodplain. More is better than less. The boundary of the study area should have additional data beyond both ends of the channel.

Tip

Convert Laz to Las (if needed)

  1. Add ๐Ÿงฐ LAStools toolbox to ArcGISPro. Open the ๐Ÿงฐ LAStools toolbox and select ๐Ÿ› ๏ธ las2lasPro (transform) tool.
  2. Drag the folder with the Laz files into the Input folder.
  3. Change the output format to Las. Click Run.

โš ๏ธ Caution

Transform LAS file projections

All datasets need to be in the same projection for the entire Study Area.

  1. Open LAStools ๐Ÿ› ๏ธ las2lasPro (transform) tool
  2. Add the folder for the files that need to be reprojected to the input folder.
  3. Chosen projection for transform. Projections must be in feet or meters.

Chose a location to create file storage structure for data.

  1. In a folder create a file GDB and a folder labeled LPC. Use the year as the naming convention. Ex. 2025. This is where the LAS Lidar files will go.
  2. Create a feature dataset for each GDB. The projection used should be the same as the LAS files for each year. Use site, number, and year for naming convention. Ex. SiteName_120_2025.

Analysis Workflow

๐Ÿ”ง Practical

Create a Boundary

Boundary within 1 mile buffer

Boundary within 1 mile buffer
  1. Right click on the feature dataset and click new Feature Class.
  2. Name is boundary and keep feature class type as polygon.
  3. Click Finish.
  4. Change symbology to black outline.
  5. Zoom to your site and create a polygon that surrounds the water system by roughly 100 feet. The distance should be taken from along the entire edge of the stream to account for available elevation data for later analysis.

Create a LAS Dataset

  1. In the geoprocessing tab search ๐Ÿ› ๏ธ Create LAS Dataset tool.
  2. In the Input Files select the Folder where the LAS tiles were downloaded to.
  3. In the Output LAS Dataset browse to the ๐Ÿ“ LPC folder where the two sets of LAS tiles are saved. Name it after the year.
  4. Under ๐Ÿ“Š Surface Constraints the input feature is ๐Ÿ—บ๏ธ Boundary.
  5. Right click on of the LAS files for the site and go to properties then coordinate system. Copy and paste the coordinate system into the geoprocessing tool.
  6. Click run.

See step 9

See step 9
  1. Once tool is finished running, Right click the dataset in the contents pane and select๐Ÿ“Š Properties. Under properties click ๐Ÿงฎ LAS Filter.
  2. Under ๐Ÿ“Š Classification Codes, make sure only ๐Ÿงฎ ground, ๐Ÿงฎ water, and ๐Ÿงฎ rail are checked. Uncheck all other boxes. Hit Ok.
  3. Zoom to the site area to the extent of 1:2000. Make sure you see the classified dots labeled water and ground.


Turn LAS Dataset to Raster

  1. In the geoprocessing tab search ๐Ÿ› ๏ธ LAS Dataset to Raster tool.
  2. The ๐Ÿ“Š Input LAS Dataset will be the one you created in the prior step. Make sure to use the dropdown arrow to select your LAS dataset. Do not drag it from the catalog pane. This will select the LAS dataset with the symbology changes you made prior.
  3. The Output Raster location will be the geodatabase you created under the ๐Ÿ“ SSRP_Sites folder. Name it DEM_Year. Ex. DEM_2022
  4. Value field is ๐Ÿงฎ Elevation.
  5. For ๐Ÿ“Š Interpolation Type select ๐ŸงฎBinning.
  6. ๐Ÿ“Š Cell Assignment is ๐Ÿงฎ IDW.
  7. ๐Ÿ“Š Void Fill Method is ๐Ÿงฎ Natural Neighbor.
  8. ๐Ÿ“Š Output Data Type is ๐Ÿงฎ Floating Point.
  9. For coordinate system in state plane feet: ๐Ÿ“Š Sampling Type is ๐Ÿงฎ Cell Size. Change ๐Ÿ“Š Sampling Value to ๐Ÿงฎ 1 and ๐Ÿ“Š Z Factor to ๐Ÿงฎ 1.
  10. Click Run.

Change Symbology of Raster

  1. Click on your created raster symbology.
  2. ๐Ÿ“Š Primary symbology should be ๐Ÿงฎ stretch.
  3. Change the ๐Ÿ“Š color scheme to ๐ŸงฎElevation #1.
  4. ๐Ÿ“Š Stretch type to ๐Ÿงฎ Standard Deviation.
  5. ๐Ÿ“Š Statistics to ๐Ÿงฎ DRA.

Check Raster Pixel Size and columns and rows

  1. Zoom into layer at the extent of 1:15.
  2. Use the ๐Ÿ› ๏ธ measure tool to measure the length of pixel. Should be ๐Ÿงฎ 1 ft.
    1. Make sure the measuring tool is set to feet or imperial.
  3. Open properties and check that the columns have not been inflated to into the millions.
    1. If there are number of columns in the millions re-run the Las to Raster and set the processing extent to boundary as well and then run again.

Create Cutlines Line Feature Class

  1. Right click your geodatabase and click new feature dataset.
  2. Keep Output Geodatabase
  3. For the features line feature class ๐Ÿ“Š Name, name is ๐ŸงฎSite#_EVENT. Ex. Site263_2008.
  4. Use the dropdown box under coordinate system and select the corresponding LAS dataset to select the correct coordinate system.
  5. Click Run.
  6. Right click the newly created feature dataset and create new feature class.
  7. Name it ๐Ÿ—บ๏ธ cutlines feature class, Change feature ๐Ÿ“Š class type to ๐Ÿงฎ line, and finish.
  8. Identify Flow Blockages
    1. Go to the edit ribbon and select ๐Ÿ› ๏ธ create feature and select cutlines
    2. Zoom to the start of the water system and change the extent to around 1:1000.
    3. Follow along the water system and look for roads or major crossings that cut off the water system. Draw a line from one end of the waterway to the other side that is cut off. Below are a few examples.

    Cutline example 1

    Cutline example 1

    Cutline example 2

    Cutline example 2
  9. If there are no blockages create a cutline at each end of the stream.
  10. When done, make sure to save edits before doing the next step.

Hydro Modify DEM

  1. In the catalog pane, go to the FluvialGeomorph toolbox. Expand tools and select ๐Ÿ› ๏ธ Hydro DEM tool.
  2. For output_workspace, drag your geodatabase from the catalog pane (Created prior) into the space.
  3. For ๐Ÿ“Š cutlines, drag your ๐Ÿ—บ๏ธ cutline feature classes into the space.
  4. For ๐Ÿ“Š dem, drag your ๐Ÿ—บ๏ธ hydro_DEM raster dataset into the space.
  5. For ๐Ÿ“Š widen_cells put ๐Ÿงฎ 4.
  6. Click Run.
    1. The result is a DEM without the flow blockages and representing proper water flow across the study area.

Derive Stream as Line Tool โ€“ Esri Spatial Analyst Toolbox

  1. Open ๐Ÿ› ๏ธ Derive Stream as Line tool
  2. Select the ๐Ÿ—บ๏ธ dem_hydro raster as the input surface raster
  1. Set the ๐Ÿ“Š output polyline as ๐Ÿงฎ stream in the feature dataset.
  1. Hit Run. Then repeat for the earlier geodatabase.
  2. Change color of streamlines to a bright color to see it better against the dem.
  3. Delete all tributaries or lines that are not the main low point flowline. Use split and edit vertices tools. Connect all lines together using the create feature tool.
    1. Make sure the streamline is going through the lowest part of the channel
  4. Save edits.
Note

The derive stream as line tool could produce disconnected stream lines that need to be snapped together after all lies outside the mainstem are removed.

Smooth Line Tool โ€“ Esri Cartography Toolbox

  1. Open ๐Ÿ› ๏ธ Smooth Line tool
  2. Set ๐Ÿ“Š smoothing between ๐Ÿงฎ 2 and 15 depending on the size and flow of the channel.
  3. Check that flowline remains in the channel. Edit flowline or rerun smooth as needed to keep line in channel.
Note

The line can be smoothed as much as desired as long as the line remains in the channel. Having the line to detailed makes extraneous flowline points.

Create Flowline

  1. In the FluvialGeomorph toolbox, select the ๐Ÿ› ๏ธ Flowline tool.
  2. For the feature_dataset and stream_network drag and drop the corresponding data from the catalog.
  3. For ๐Ÿ“Š smooth_tolerance put ๐Ÿงฎ 2. It can range from 2-5 based on the range of distribution of the flowline. The goal is to produce a smooth flowline without removing too much resolution from the line.
  4. Hit Run Note: Make sure to do most recent data first. Rerun tool for older set of data once done.
  5. The output is a line feature class called ๐Ÿ—บ๏ธ flowline feature class. This tool derives the site flowline and smooths the stream_network geometry and converts the flowline into a route.
  6. Ensure that the flowline remains in the channel and is not simplified into the floodplain. If this occurs, rerun reducing the degree of smoothing.
    1. Also ensure that the red endpoint (vertice) is at the upstream end of the flowline. The end points for each survey must also be snapped together so the calibrations done in the flowline points works correctly. It is critical that the flowline is digitized in the upstream direction and that all survey event are snapped. If this step is not performed, all subsequent tools will malfunction.
  7. Open attribute table for each flowline and stream network.
  8. The ๐Ÿ“Š Reach Name must be the same for each ๐Ÿ—บ๏ธ flowline and ๐Ÿ—บ๏ธ stream network feature classes. The name is the Site# and survey event. Ex. Site 264 KANE-DUPAGE County SWCD
  9. Check that the flowline is in and near the center of the main channel represented in the hydro_dem.

Create Flowline Points

  1. In the FluvialGeomorph toolbox, select the ๐Ÿ› ๏ธ Flowlinepoints tool.
  2. For this tool make sure you do the most recent data first. Find the corresponding data for flowline in the feature dataset.
  3. The dem will be the ๐Ÿ—บ๏ธ dem_hydro raster.
  4. ๐Ÿ“Š Km_to_mouth will be ๐Ÿงฎ 0 in most circumstances.
  5. For ๐Ÿ“Š station_distance put ๐Ÿงฎ 1. This means there will be a station point for every foot along the flowline.
  6. The ๐Ÿ“Š calibration points, ๐Ÿ“Š point id field, and ๐Ÿ“Š measure field will be blank for the most recent data.
  1. Leave the ๐Ÿ“Š search radius default.
  2. Hit run.
  3. Note: Before you run the ๐Ÿ› ๏ธ flowline_points tool for the older dataset, make sure the newer ๐Ÿ› ๏ธ Flowlinepoints tool is done running.
  4. For the older dataset, fill in the information like when running the tool for the newer data.
  5. For calibration points, drag the ๐Ÿ—บ๏ธ flowline_points feature class created from the newer data.
Note

If the flowline end nodes are not snapped it could cause the layer to be empty.

  1. The point ๐Ÿ“Š id field is ๐Ÿงฎ ReachName.
  2. ๐Ÿ“Š Measure field is ๐Ÿงฎ POINT_M
  3. Hit run.
  4. The result converts the flowline into a series of points along the reach. The tool converts the ๐Ÿ—บ๏ธ flowline feature class into a route, calculates the distance to the mouth of the river for all vertices, and creates a ๐Ÿ—บ๏ธ flowline_points feature class.

Create Features

  1. Right-click on the feature dataset and click ๐Ÿ› ๏ธ Create Feature Class tool and select point for the geometry type and place in either year feature dataset.
  2. Add fields for ๐Ÿ“Š Name ๐Ÿงฎ (text) and ๐Ÿ“Š kmto_mouth ๐Ÿงฎ (double).
  3. Drag the ๐Ÿ—บ๏ธ features point feature class into the map. Move it to first in drawing order.
  4. Turn off all layers except the flowline points, so you can see the basemap.
  5. On the ribbon, click edit and ๐Ÿ› ๏ธ Create Features tool.
  6. You will create feature at the site # and any other major features on the basemap that the flowline points cross, likes a road, waterway with name, or lake. First, use the explore tool to click on a flowline point. Create the feature on top of the flowline point you selected.
    1. Serve as reference on the profile graph in the report.
  7. In the table find the number next to โ€œMeasureโ€. Take note of this number, you will add it to the table once you create the feature.
  8. Open attribute table for ๐Ÿ—บ๏ธ features point feature class. Under km_to_mouth put the number that was correlated with โ€œMeasureโ€.
  9. The name in most cases will just be the name of the street or waterway. For the Site# feature, the name will be Site# and the SSRP_Type found in the attribute table of Illinois_SSRPSites_2004_2016. Ex. Site 264.

Reuse the feature layer in future sites

  1. Right click on the ๐Ÿ—บ๏ธ features point feature class for most recent data. Go to import and select Feature Class(es).
  2. For the input features, go to a previous county folder and expand the feature dataset for the most recent geodatabase under any Site# and import that database layer called ๐Ÿ—บ๏ธ features point feature class.
  3. For the output geodatabase, choose the corresponding feature dataset. This allows the use of a layer with existing fields.

REM

  1. In the FluvialGeomorph toolbox, select the ๐Ÿ› ๏ธ REM tool.
  2. Fill in the parameters with the corresponding data. Make sure for dem you choose the ๐Ÿ—บ๏ธ hydro_dem raster.
  3. ๐Ÿ“Š Buffer distance will be ๐Ÿงฎ 1500.
  4. Hit run. Note: You will not be able to create features and run this tool at the same time.
    1. The purpose of this step is to produce a REM. This DEM normalizes stream bank elevations for a specific reach.
  5. Select the symbology for the REM.
  6. Change the ๐Ÿ“Š renderer from Stretch to the ๐Ÿงฎ Classify.
  7. Change ๐Ÿ“Š number of classes to ๐Ÿงฎ two.
  8. In the ๐Ÿ“Š first class, change the upper value to ๐Ÿงฎ 100 and note how the REM changes.
    1. Add onto by this upper value until the dem fills the bank and right before it starts โ€˜overflowingโ€™ into the floodplain, which is 2 times the depth of the channel.
    2. Get an elevation at the bank and then the center of the channel and add the difference to the 100 first class value.

Find the Channel and Floodplain

  1. Have the ๐Ÿ—บ๏ธ flowline feature class, ๐Ÿ—บ๏ธ demhydro raster and ๐Ÿ—บ๏ธ REM raster for the newer year.
  2. Find the elevation in the ๐Ÿ—บ๏ธ REM raster for the bank and the ๐Ÿ—บ๏ธ flowline feature class. Check multiple locations along the stream, including the site location.
  3. Find the average difference in elevation between the bank and the flowline.
  4. Subtract the two REM values to get the bankfull depth for the channel. Ex. bank elevation 104 and flowline elevation 100 then the channel depth is 104. This value is used in the ๐Ÿ› ๏ธ Water Surface Extent tool as the ๐Ÿ“Š REM_value. This will become the channel bank_raw value.
  5. Next Multiply the last number of the channel bank_raw value by 2 and use it as the ๐Ÿ“Š REM_value for the ๐Ÿ—บ๏ธ floodplain bank_raw feature class. Ex. channel bank_raw 104 make the floodplain bank_raw 108.

Create Water Surface Extent

  1. In the FluvialGeomorph toolbox, select the ๐Ÿ› ๏ธ Water Surface Extent tool.
  2. Fill in the ๐Ÿ—บ๏ธ features point feature class and the ๐Ÿ—บ๏ธ REM raster for from the most recent year.
  3. Enter the depth value found for the channel
  4. Set ๐Ÿ“Š smoothing to ๐Ÿงฎ 5.
  5. Hit Run
  6. Run again for the floodplain depth.

Edit the Channel and Floodplain Banks_raw layers

Sample of a channel bank and floodplain layer

Sample of a channel bank and floodplain layer
  1. Open the attribute table for the ๐Ÿ—บ๏ธ channelbanks_raw feature class. Sort the Shape_Area column descending.
  2. Use the gridcode column value of 1 to find the highest row(s) that make up the stream channel around the flowline. With the channel polygons selected switch the selection and delete all other polygons leaving only the stream channel.
  3. The ๐Ÿ—บ๏ธ channelbanks_raw feature class need to be trimmed of any incoming confluences. Then save the edits.
  4. Repeat Create ๐Ÿ› ๏ธ Water Surface Extent tool for the ๐Ÿ—บ๏ธ floodplainbanks_raw feature class. Leave an additional area or confluences.

Create Cross Sections(XS) (only for newest dataset)

  1. In the FluvialGeomorph toolbox, select the ๐Ÿ› ๏ธ XS Layout tool.
  2. Fill in the ๐Ÿ—บ๏ธ features point feature class and ๐Ÿ—บ๏ธ flowline feature class from the most recent geodatabase.
  3. For ๐Ÿ“Š split type keep as ๐Ÿงฎ split at approximate distance.`
  4. ๐Ÿ“Š Transect spacing is ๐Ÿงฎ 300.
  5. ๐Ÿ“Š Transect_width is determined by width of floodplain from the flowline. Find the distance of the farthest point of the floodplain from the flowline
  6. ๐Ÿ“Š Transect_width_unit ๐Ÿงฎ default is used.
  7. Hit Run.
    1. The result is a line feature class of regularly spaced cross sections that well represent the channel conditions found in this reach.
    2. Make sure none of the lines are hanging outside the raster area.
  8. Select each cross section and make sure green box is on left side of the bank going downstream. Start at upstream going downstream. Make sure the XSโ€™s lines are parallel to bank. Edit each cross section so that they are perpendicular to the flow of the stream. Adjust their location if they are too close to highways or other smaller streams. The purpose is to get a cross section that extend the full width of the floodplain.
    1. If cross sections cannot be moved without overlapping, they can be deleted. This may occur with tight bends or some meandering of the stream.

XS Resequence (only for the newest dataset)

  1. Run ๐Ÿ› ๏ธ Resequence only if any cross sections were deleted in the adjustment process.

Calculate XS Watershed Area (only for newest dataset)

  1. In the fluvialgeomorph folder, expand layers and add a clip of the needed county from the NHDPlusFac_National.tif. This dataset can be found at EPA
Tip

Having countywide ๐Ÿ—บ๏ธ NHD raster layer improves processing time if there is more than one site in a county.

  1. Right click the layer, go to data, then export raster
  2. Add the output to whatever year folder.
  3. Clipping geometry is displaying current extent. Make sure you are zoomed out to the whole county, so each site is located within extent.
    1. Optional: Create a clip for each project site of the ๐Ÿ—บ๏ธ NHDPlusFac_National.tifraster with the extent zoomed out 1:50000 centered on the site.
  4. Go to FluvialGeomorph toolbox. Add ๐Ÿ› ๏ธ Wastershed Area tool.
  5. ๐Ÿ“Š Snap distance is ๐Ÿงฎ 100.
  6. Start with the more recent data first.
  7. Hit Run.
    1. If it doesnโ€™t work zoom into the mile radius of site and clip FAC. Having a smaller clip will also reduce the tool runtime.
    2. The result is a new attribute field in the ๐Ÿ—บ๏ธ XS line feature class that has a calculated watershed area for each regularly spaced cross section.
  8. Once it is done running, open attribute table and see if anything in the watershedareaSqMile is off.
    1. Some of the ๐Ÿ—บ๏ธ XS line feature class ๐Ÿ“Š Watershed_Area_SqMile may not follow the trend. If this is the case, manually enter in the values to fill in the gaps. If most of the XSโ€™s are missing these or display incorrect values, rerun ๐Ÿ› ๏ธ Watershed Area tool and increase the ๐Ÿ“Š snap distance.
    2. Check for other streams and bodies of water feeding into the stream that would validate the abrupt changes in the watershed area.
  9. Import the finished ๐Ÿ—บ๏ธ XS_300_100 line feature classto the earlier year feature dataset.

XS River Position

  1. In the FluvialGeomorph toolbox, select ๐Ÿ› ๏ธ XS River Position.
  2. Enter ๐Ÿ—บ๏ธ features point feature class from more recent geodatabase.
  3. Input ๐Ÿ—บ๏ธ XS line feature class.
  4. Input ๐Ÿ—บ๏ธ flowlinepoints feature class.
  5. Hit Run.
  6. The result adds new fields in the attribute table of the ๐Ÿ—บ๏ธ XS line feature class.
  7. Two temporary charts will populate the Contents tab under the ๐Ÿ—บ๏ธ XS line feature Cclass (๐Ÿงฎ XS Seq by ๐Ÿ“Š km_to_mouth, ๐Ÿงฎ XS Seq by ๐Ÿ“Š Watershed Area sq mile). If the charts are removed from the contents pane, you will need to run the ๐Ÿ› ๏ธ XS River Position tool to view them again.
    1. Open both Charts and inspect for any issues in the data.
    2. Note: This step provides charts which help see if there are gaps in the data.
  8. Repeat ๐Ÿ› ๏ธ XS River Position tool for the older gdb.

XS Points

  1. In the FluvialGeomorph toolbox, select ๐Ÿ› ๏ธ XSpoints.
  2. Enter feature dataset for more recent geodatabase.
  3. Input ๐Ÿ—บ๏ธ XS line feature class.
  4. Input ๐Ÿ—บ๏ธ dem_hydro raster.
  5. Change ๐Ÿ“Š dem_units to ๐Ÿงฎ ft.
  6. Input ๐Ÿ—บ๏ธ REM raster for the ๐Ÿ“Š REM_dem.
  7. ๐Ÿ“Š Station Distance is ๐Ÿงฎ 1.
  8. Hit Run.
  9. Points have been created every foot along the XSโ€™s with an Elevation. This will provide a visual elevation profile for each XS.
  10. Repeat these steps for the older gdb.

XS Point Classify

  1. In the FluvialGeomorph toolbox, select ๐Ÿ› ๏ธ XS Points Classify.
  2. Enter feature dataset for the most recent year.
  3. Input ๐Ÿ—บ๏ธ XSpoints feature class.
  4. Input ๐Ÿ—บ๏ธ channel polygon feature class.
  5. Input ๐Ÿ—บ๏ธ floodplain polygon feature class.
  6. Leave ๐Ÿ“Š buffer distance as ๐Ÿงฎ default.
  7. Repeat for earlier year XS Points.

Run Report

๐Ÿ”ง Practical

XS Dimensions Level 1

  1. In the FluvialGeomorph toolbox, open ๐Ÿ› ๏ธ XS Dimensions, Level 1.
  2. ๐Ÿ—บ๏ธ XS line feature class are added into ๐Ÿ“Š xs_line fc.
  3. Enter ๐Ÿงฎ 4 for the ๐Ÿ“Š lead_n.
    1. This sets the moving window to average 4 XSโ€™s above and below the XS being calculated.
  4. Leave the ๐Ÿ“Š use_smoothing box ๐Ÿงฎ unchecked and ๐Ÿ“Š loess_span as ๐Ÿงฎ 0.1.
  5. Check that the vert_units are in ft.
  6. After the tool completes, refresh the folder the gdb is in and you should find a .csv file in there.

Join from CSV (Data Management toolbox)

  1. In the FluvialGeomorph toolbox, open ๐Ÿ› ๏ธ Join From CSV tool located in the ๐Ÿงฐ Data Management toolset.
  2. Feature_dataset will be the ๐Ÿ—บ๏ธ features point feature class of the most recent gdb.
  3. Fc will be the ๐Ÿ—บ๏ธ XS line feature class.
  4. Choose ๐Ÿงฎ Seq in the dropdown for the ๐Ÿ“Š fc_field.
  5. The ๐Ÿ“Š csv_file will be the ๐Ÿงฎ .csv file created from the ๐Ÿ› ๏ธ XS Dimensions, Level 1 Tool.
  6. ๐Ÿ“Š Csv_field will match the ๐Ÿ“Š fc_field so it should also be ๐Ÿงฎ Seq.
  7. Hit Run.
  8. A new line feature class ending with dims_L1 will be added to the feature dataset.

Generate Level 1 Report

  1. In the FluvialGeomorph toolbox, open the ๐Ÿ› ๏ธ Report โ€“ L1 tool located in the ๐Ÿงฐ Reports toolset.
  2. ๐Ÿ“Š Stream will be the ๐Ÿงฎ ReachName which was created when making the flowline. Copy and paste the ReachName from XSโ€™s attribute table.
  3. ๐Ÿ“Š flowline_fc will be the ๐Ÿ—บ๏ธ flowline feature class from the recent year.
  4. ๐Ÿ“Š XS_dimensions_fc will be the line feature class created during the ๐Ÿ› ๏ธ Join From CSV tool.
  5. ๐Ÿ“Š flowline_points_1 will be the ๐Ÿ—บ๏ธ flowlinepoints feature classfrom the most recent year.
    1. ๐Ÿ“Š flowline_points_2 will be the ๐Ÿ—บ๏ธ flowlinepoints feature class from the older year.
  6. ๐Ÿ“Š XS_points_1 will be the ๐Ÿ—บ๏ธ XSpoints point feature class created from the XS Points tool. Use the data from the most recent year.
    1. ๐Ÿ“Š XS_points_2 will be the ๐Ÿ—บ๏ธ XSpoints feature class for the older year.
  7. ๐Ÿ“Š Survey_name_1 will be the year of the most recent data (ex: 2022).
    1. ๐Ÿ“Š Survey_name_2 will be the year of the older data (ex: 2012).
  8. ๐Ÿ“Š Features_fc will need the ๐Ÿ—บ๏ธ features point feature class that was created to indicate roadways, site improvements, or other bodies of water.
  9. ๐Ÿ“Š Channel_fc will be the lower number bank_raw layer that represents the channel.
  10. ๐Ÿ“Š Floodplain_fc will be the higher number bank_raw layer that represents the floodplain,
  11. ๐Ÿ“Š Dem will need the ๐Ÿ—บ๏ธ dem_hydro raster.
  12. Check the box for: show_xs_map.
  13. Change profile_units to feet.
  14. Check boxes for aerial and elevation.
  15. ๐Ÿ“Š XS_label_freq and ๐Ÿ“Š exaggeration should already be set to ๐Ÿงฎ 10 and ๐Ÿงฎ 1.2, respectively.
  16. ๐Ÿ“Š Output_dir is where the report will be stored. Each project has a Reports folder.
  17. ๐Ÿ“Š Output_format is ๐Ÿงฎ.word_document.
  18. Hit Run.
  19. Review report for errors and anomalies in the data.

Next Steps

โ˜‘๏ธ Evaluate

Review the report.

  1. Go to chapter Level 1 Report under Report Reviews.
  2. Refer to the FG Technical Manual as need for more detailed information.
  3. Revise and/or rerun as needed.