diff --git a/src/solver/include/swmm5.h b/src/solver/include/swmm5.h
index e150a74f2..f0768206d 100644
--- a/src/solver/include/swmm5.h
+++ b/src/solver/include/swmm5.h
@@ -84,7 +84,8 @@ typedef enum {
     swmm_NODE_LATFLOW  = 306,
     swmm_NODE_INFLOW   = 307,
     swmm_NODE_OVERFLOW = 308,
-    swmm_NODE_RPTFLAG  = 309
+    swmm_NODE_RPTFLAG  = 309,
+    swmm_NODE_OUTFLOW  = 310
 } swmm_NodeProperty;
 
 typedef enum {
diff --git a/src/solver/swmm5.c b/src/solver/swmm5.c
index 6ff8c9b26..c503e37d5 100644
--- a/src/solver/swmm5.c
+++ b/src/solver/swmm5.c
@@ -1049,6 +1049,9 @@ double getNodeValue(int property, int index)
           return node->overflow * UCF(FLOW);
         case swmm_NODE_RPTFLAG:
           return (node->rptFlag > 0);
+        case swmm_NODE_OUTFLOW:
+            return node->outflow * UCF(FLOW);  
+        
         default:
           return 0;
     }