Confidential

Chapter Realignment Engine

Sign in with your Red Cross ArcGIS Online account to model county reassignments within a region.

Confidential — American Red Cross — Do Not Distribute
Chapter Realignment
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How to use this tool

  1. Pick a region from the dropdown at the top.
  2. The map shows every county in that region, colored by its current chapter assignment.
  3. Use Map + table for geography and bulk edits, or Move planner to preview one county move before applying it.
  4. In the county table or planner, move a county to a different chapter and the chapter rollups recalculate instantly.
  5. Use Impact view to compare the baseline against the current scenario across affected chapters.
  6. Changed counties are outlined in red on the map and highlighted in the table.
  7. Click Save Scenario to store a named version. Reset All clears your changes.

Metric Footnotes

Scenario totals are calculated from the current county values in County_Consolidated_Metrics. Moving a county changes chapter totals; it does not change the underlying source data.

Metric Field Period / Vintage Source note
Population DEM_Population 2023 County demographic source field Pop_2023.
Households DEM_Households 2023 County demographic source field Total_HH_2023.
Square miles DEM_SquareMiles Current county geography layer County area from ARC county geography source field SQ_MI.
Elderly DEM_Seniors 2023 Population age 65+ from source field Seniors_65_up_Pop_2023.
Disabled SVI_Disabled CDC/ATSDR SVI 2022 County disability estimate from SVI source field E_DISABL.
Home fires FLARE_TotalFires FLARE source period; not stamped in this app yet County total from Red Cross FLARE counties source field total.
Smoke alarms SA_Install_Count FY15-FY24 Aggregated from Jeff-owned Smoke Alarm Installs layer GIS_MAP_FY15_to_FY24. Refreshed May 17, 2026.
Biomed collections BIO_Collections 2022-2026 Total collection units from county rows in Counties - Biomed Collections 22-26. The app displays BIO_Collections, sourced from Units_Grand_Total; drive count is stored separately as BIO_Drive_Count. Refreshed May 17, 2026.
Donors DON_Donor_Count $5K+ donors, past 12 months source Aggregate-only count from Jeff-controlled $5K+ donor source. Donor row-level records and personally identifiable information must not be exposed in this app.
Real estate RE_Facility_Count Jeff-controlled CoStar / real estate source County count from the trusted real estate feature layer. Brivo/security-site records are not used as the v1 real estate authority.
Vehicles VEH_Count Placeholder National fleet source is not confirmed. California/Pacific-only fleet layers are not published into national chapter realignment totals.
Trailers TRL_Count Current trailer inventory snapshot Active trailer count from the National Trailer Inventory data used by trailer-study.vercel.app; publish/update stamp stored in trailer QA fields after rollup.
SVI SVI_Overall CDC/ATSDR SVI 2022 County overall social vulnerability percentile; chapter values are averages of moved county values.
NRI NRI_RiskScore FEMA National Risk Index county layer in current registry County risk score; chapter values are averages of moved county values.
ALICE ALICE_CombinedRate 2023 County ALICE + poverty combined rate; chapter values are averages of moved county values.
County count FIPS Current scenario Count of counties assigned to each chapter after any scenario moves.

Privacy note: donor, volunteer, incident, smoke alarm, and other sensitive row-level records are not exposed in this app. The app receives county-level aggregate fields only.

QA note: fields marked pending are intentionally displayed as unavailable until a source layer, county rollup rule, and refresh stamp are approved.

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Scenario Assistant

Secure local command helper. It uses only the loaded county aggregates, never sends prompts to an external service, and never writes to ArcGIS.

Pick a region, type a command, and preview before applying anything.
Scenario —

Welcome, Dragon

This tool models county reassignments within a single region — just like the Florida realignment demo, but powered by live AGOL data.

To begin, pick a region from the dropdown at the top. ↑

48 regions · 3,152 counties · 112 metrics per county

Chapter Summary Pick a region to see chapter rollups
Balance chart
Pick a region to compare chapter load.
No region selected.
Layer stack active + planned
County Pop HH Sq mi Fires SVI ALICE Chapter

Select a region first

Pick a region from the top dropdown, then use this tab to test a county move.

No scenario changes yet

Move a county from the map table or the move planner to build an impact report.

No changes