diff --git a/README.md b/README.md
index ce954d6..e192c16 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,23 @@ npm install
 npm run dev
 ```
 
+View the application at http://localhost:3000/
+
+### Viewing Reports with Local Data
+
+Normally local development can view production data. However, when developing and interating
+on a new report, you may want to test locally.
+
+With the [development server running](#run-development-server)
+
+1. Add query param `?env=local`
+2. Drop report files into a `local` directory at the top of the repo
+    File paths will need to match the production paths, so for example:
+    | environment | path |
+    |-------------|------|
+    | production  | `/prod/daily-auths-report/2023/2023-01-15.daily-auths-report.json` |
+    | local       | `/local/daily-auths-report/2023/2023-01-15.daily-auths-report.json` |
+
 ### Run Tests
 
 ```