diff --git a/scripts/drainaquifer.rb b/scripts/drainaquifer.rb
new file mode 100644
index 000000000..4e2ae4ff1
--- /dev/null
+++ b/scripts/drainaquifer.rb
@@ -0,0 +1,11 @@
+# remove all aquifers from the map
+
+count = 0
+df.each_map_block { |b|
+	if b.designation[0][0].water_table or b.designation[15][15].water_table
+		count += 1
+		b.designation.each { |dx| dx.each { |dy| dy.water_table = false } }
+	end
+}
+
+puts "cleared #{count} map blocks"