diff --git a/stable-crust/zone/AR/Saline River/README.md b/stable-crust/zone/AR/Saline River/README.md
index 9a9b0eafdeec3ca86f1be8cf03bf2a083bff4ac6..b512ef45592b30b2164811cf96152995e18e9a94 100644
--- a/stable-crust/zone/AR/Saline River/README.md	
+++ b/stable-crust/zone/AR/Saline River/README.md	
@@ -22,4 +22,8 @@ For rate, followed CEUS SSCn (2012) method: Duration is uniformly distributed be
 | 0.244 | 3.1E-04  |
 | 0.101 | 1.0E-04  |
 
-For the 2023 NSHM, we give this source a weight of 0.5.
+For the zone rate, we use the weighted average of the above rates.
+
+In the 2023 NSHM, we assign this source a weight of 0.5 with the `null` branch of the
+logic tree representing the possibility that nothing happens. The rates in this zone
+are not scaled with latitude.
diff --git a/stable-crust/zone/AR/Saline River/active/saline-river.csv b/stable-crust/zone/AR/Saline River/active/saline-river.csv
index bdddb9aa4a1a0983ee441b52d8396447657746d6..bf2ffc0305cddb74a2df384fe16ef1e085a2bcb3 100644
--- a/stable-crust/zone/AR/Saline River/active/saline-river.csv	
+++ b/stable-crust/zone/AR/Saline River/active/saline-river.csv	
@@ -1,41 +1,40 @@
 lon,lat,rate
--91.4,33.2,2.87E-05
--91.8,33.3,2.87E-05
--91.7,33.3,2.87E-05
--91.7,33.3,2.87E-05
--91.6,33.3,2.87E-05
--91.5,33.3,2.87E-05
--91.4,33.3,2.87E-05
--92.1,33.4,2.87E-05
--92.0,33.4,2.87E-05
--91.9,33.4,2.87E-05
--91.8,33.4,2.87E-05
--91.7,33.4,2.87E-05
--91.6,33.4,2.87E-05
--91.5,33.4,2.87E-05
--91.4,33.4,2.87E-05
--92.5,33.5,2.87E-05
--92.4,33.5,2.87E-05
--92.3,33.5,2.87E-05
--92.2,33.5,2.87E-05
--92.1,33.5,2.87E-05
--92.0,33.5,2.87E-05
--91.9,33.5,2.87E-05
--91.8,33.5,2.87E-05
--91.7,33.5,2.87E-05
--91.6,33.5,2.87E-05
--91.5,33.5,2.87E-05
--92.6,33.6,2.87E-05
--92.5,33.6,2.87E-05
--92.4,33.6,2.87E-05
--92.3,33.6,2.87E-05
--92.2,33.6,2.87E-05
--92.1,33.6,2.87E-05
--92.0,33.6,2.87E-05
--91.9,33.6,2.87E-05
--91.8,33.6,2.87E-05
--92.5,33.7,2.87E-05
--92.4,33.7,2.87E-05
--92.3,33.7,2.87E-05
--92.2,33.7,2.87E-05
--92.5,33.8,2.87E-05
+-91.4,33.2,2.94E-05
+-91.8,33.3,2.94E-05
+-91.7,33.3,2.94E-05
+-91.6,33.3,2.94E-05
+-91.5,33.3,2.94E-05
+-91.4,33.3,2.94E-05
+-92.1,33.4,2.94E-05
+-92.0,33.4,2.94E-05
+-91.9,33.4,2.94E-05
+-91.8,33.4,2.94E-05
+-91.7,33.4,2.94E-05
+-91.6,33.4,2.94E-05
+-91.5,33.4,2.94E-05
+-91.4,33.4,2.94E-05
+-92.5,33.5,2.94E-05
+-92.4,33.5,2.94E-05
+-92.3,33.5,2.94E-05
+-92.2,33.5,2.94E-05
+-92.1,33.5,2.94E-05
+-92.0,33.5,2.94E-05
+-91.9,33.5,2.94E-05
+-91.8,33.5,2.94E-05
+-91.7,33.5,2.94E-05
+-91.6,33.5,2.94E-05
+-91.5,33.5,2.94E-05
+-92.6,33.6,2.94E-05
+-92.5,33.6,2.94E-05
+-92.4,33.6,2.94E-05
+-92.3,33.6,2.94E-05
+-92.2,33.6,2.94E-05
+-92.1,33.6,2.94E-05
+-92.0,33.6,2.94E-05
+-91.9,33.6,2.94E-05
+-91.8,33.6,2.94E-05
+-92.5,33.7,2.94E-05
+-92.4,33.7,2.94E-05
+-92.3,33.7,2.94E-05
+-92.2,33.7,2.94E-05
+-92.5,33.8,2.94E-05