diff --git a/river/branch_125.arc b/river/branch_125.arc
index 4245d508d..273df4555 100644
--- a/river/branch_125.arc
+++ b/river/branch_125.arc
@@ -6,7 +6,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object rjunct_ns-ne
 face branch_125.211
 name river junction
@@ -15,4 +15,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/branch_135.arc b/river/branch_135.arc
index 7a49016a8..6abf052a9 100644
--- a/river/branch_135.arc
+++ b/river/branch_135.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/branch_137.arc b/river/branch_137.arc
index 41a0d50b1..f8baa324e 100644
--- a/river/branch_137.arc
+++ b/river/branch_137.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/branch_145.arc b/river/branch_145.arc
index 174572f34..c334a323f 100644
--- a/river/branch_145.arc
+++ b/river/branch_145.arc
@@ -6,7 +6,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object rjunct_ns-se
 face branch_145.211
 name river junction
@@ -15,4 +15,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/branch_156.arc b/river/branch_156.arc
index b85023557..131fae2cf 100644
--- a/river/branch_156.arc
+++ b/river/branch_156.arc
@@ -6,7 +6,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object rjunct_ns-sw
 face branch_156.211
 name river junction
@@ -15,4 +15,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/branch_157.arc b/river/branch_157.arc
index 4f61e7779..29de4c663 100644
--- a/river/branch_157.arc
+++ b/river/branch_157.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/branch_158.arc b/river/branch_158.arc
index d11cf7866..6b4b76f2e 100644
--- a/river/branch_158.arc
+++ b/river/branch_158.arc
@@ -6,7 +6,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object rjunct_ns-nw
 face branch_158.211
 name river junction
@@ -15,4 +15,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/branch_237.arc b/river/branch_237.arc
index f1bef1291..91df48bc1 100644
--- a/river/branch_237.arc
+++ b/river/branch_237.arc
@@ -6,7 +6,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object rjunct_we-ne
 face branch_237.211
 name river junction
@@ -15,4 +15,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/branch_347.arc b/river/branch_347.arc
index 25e533e3b..b01516f78 100644
--- a/river/branch_347.arc
+++ b/river/branch_347.arc
@@ -6,7 +6,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object rjunct_we-se
 face branch_347.211
 name river junction
@@ -15,4 +15,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/branch_357.arc b/river/branch_357.arc
index ce64e73ae..c35301f36 100644
--- a/river/branch_357.arc
+++ b/river/branch_357.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/branch_367.arc b/river/branch_367.arc
index 5545e9b9c..70978c34a 100644
--- a/river/branch_367.arc
+++ b/river/branch_367.arc
@@ -6,7 +6,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object rjunct_we-sw
 face branch_367.211
 name river junction
@@ -15,4 +15,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/branch_378.arc b/river/branch_378.arc
index 1dac45504..caa41b305 100644
--- a/river/branch_378.arc
+++ b/river/branch_378.arc
@@ -6,7 +6,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object rjunct_we-nw
 face branch_378.211
 name river junction
@@ -15,4 +15,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/bridge_15.arc b/river/bridge_15.arc
index be89680f5..6585ec9ff 100644
--- a/river/bridge_15.arc
+++ b/river/bridge_15.arc
@@ -5,4 +5,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/bridge_37.arc b/river/bridge_37.arc
index 824fe0409..7d1e842d1 100644
--- a/river/bridge_37.arc
+++ b/river/bridge_37.arc
@@ -5,4 +5,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/ford_ns.arc b/river/ford_ns.arc
index 2ade83ace..1b92f5896 100644
--- a/river/ford_ns.arc
+++ b/river/ford_ns.arc
@@ -5,4 +5,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/ford_we.arc b/river/ford_we.arc
index 76ac2cd09..81b2b7b12 100644
--- a/river/ford_we.arc
+++ b/river/ford_we.arc
@@ -5,4 +5,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_14.arc b/river/river_14.arc
index be958860b..f8a085cf0 100644
--- a/river/river_14.arc
+++ b/river/river_14.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_15.arc b/river/river_15.arc
index a3f80c223..a0176f435 100644
--- a/river/river_15.arc
+++ b/river/river_15.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_16.arc b/river/river_16.arc
index 50a6151a1..0a2f61c46 100644
--- a/river/river_16.arc
+++ b/river/river_16.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_25.arc b/river/river_25.arc
index 4e1989abd..17cbff045 100644
--- a/river/river_25.arc
+++ b/river/river_25.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_26.arc b/river/river_26.arc
index 6933abc9d..a300e3e40 100644
--- a/river/river_26.arc
+++ b/river/river_26.arc
@@ -6,7 +6,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object river_sw-ne_l
 face river_26.211
 name river
@@ -15,7 +15,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object river_sw-ne_u
 face river_26.311
 name river
@@ -24,4 +24,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_27.arc b/river/river_27.arc
index 993c49573..3926c7a8d 100644
--- a/river/river_27.arc
+++ b/river/river_27.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_36.arc b/river/river_36.arc
index 24d2052c3..213278041 100644
--- a/river/river_36.arc
+++ b/river/river_36.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_37.arc b/river/river_37.arc
index d8a97c2a4..c2320a6ba 100644
--- a/river/river_37.arc
+++ b/river/river_37.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_38.arc b/river/river_38.arc
index 66dc7ec4b..9c5c16802 100644
--- a/river/river_38.arc
+++ b/river/river_38.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_47.arc b/river/river_47.arc
index c3669f825..c6eb41990 100644
--- a/river/river_47.arc
+++ b/river/river_47.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_48.arc b/river/river_48.arc
index 6a438e870..5bde6a10c 100644
--- a/river/river_48.arc
+++ b/river/river_48.arc
@@ -6,7 +6,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object river_nw-se_l
 face river_48.211
 name river
@@ -15,7 +15,7 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
-end
+is_water 1
 Object river_nw-se_u
 face river_48.311
 name river
@@ -24,4 +24,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end
diff --git a/river/river_58.arc b/river/river_58.arc
index a8ee394dd..39d7f4a4b 100644
--- a/river/river_58.arc
+++ b/river/river_58.arc
@@ -6,4 +6,5 @@ no_pick 1
 color_fg blue
 editable 8
 visibility 100
+is_water 1
 end