diff --git a/src/economy_type.h b/src/economy_type.h
index a9e3ecee33..2abc9c6439 100644
--- a/src/economy_type.h
+++ b/src/economy_type.h
@@ -125,6 +125,12 @@ enum Price {
 	PR_BUILD_FOUNDATION,
 	PR_BUILD_INDUSTRY_RAW,
 	PR_BUILD_TOWN,
+	PR_BUILD_CANAL,
+	PR_CLEAR_CANAL,
+	PR_BUILD_AQUEDUCT,
+	PR_CLEAR_AQUEDUCT,
+	PR_BUILD_LOCK,
+	PR_CLEAR_LOCK,
 
 	PR_END,
 	INVALID_PRICE = 0xFF
diff --git a/src/table/pricebase.h b/src/table/pricebase.h
index ae93c6a07c..ba85dc72ac 100644
--- a/src/table/pricebase.h
+++ b/src/table/pricebase.h
@@ -70,5 +70,11 @@ extern const PriceBaseSpec _price_base_specs[] = {
 	{    250, PCAT_CONSTRUCTION, GSF_END,          PR_TERRAFORM          }, ///< PR_BUILD_FOUNDATION
 	{8000000, PCAT_CONSTRUCTION, GSF_END,          PR_BUILD_INDUSTRY     }, ///< PR_BUILD_INDUSTRY_RAW
 	{1000000, PCAT_CONSTRUCTION, GSF_END,          PR_BUILD_INDUSTRY     }, ///< PR_BUILD_TOWN
+	{  10000, PCAT_CONSTRUCTION, GSF_END,          PR_CLEAR_WATER        }, ///< PR_BUILD_CANAL
+	{  10000, PCAT_CONSTRUCTION, GSF_END,          PR_CLEAR_WATER        }, ///< PR_CLEAR_CANAL
+	{  10000, PCAT_CONSTRUCTION, GSF_END,          PR_CLEAR_WATER        }, ///< PR_BUILD_AQUEDUCT
+	{     50, PCAT_CONSTRUCTION, GSF_END,          PR_CLEAR_BRIDGE       }, ///< PR_CLEAR_AQUEDUCT
+	{   7500, PCAT_CONSTRUCTION, GSF_END,          PR_CLEAR_WATER        }, ///< PR_BUILD_LOCK
+	{  20000, PCAT_CONSTRUCTION, GSF_END,          PR_CLEAR_WATER        }, ///< PR_CLEAR_LOCK
 };
 assert_compile(lengthof(_price_base_specs) == PR_END);
diff --git a/src/tunnelbridge_cmd.cpp b/src/tunnelbridge_cmd.cpp
index 4df5a9133f..5ffce3ad5e 100644
--- a/src/tunnelbridge_cmd.cpp
+++ b/src/tunnelbridge_cmd.cpp
@@ -474,7 +474,7 @@ CommandCost CmdBuildBridge(TileIndex end_tile, DoCommandFlag flags, uint32 p1, u
 			cost.AddCost((int64)bridge_len * _price[PR_BUILD_BRIDGE] * GetBridgeSpec(bridge_type)->price >> 8);
 		} else {
 			/* Aqueducts use a separate base cost. */
-			cost.AddCost((int64)bridge_len * _price[PR_CLEAR_WATER]);
+			cost.AddCost((int64)bridge_len * _price[PR_BUILD_AQUEDUCT]);
 		}
 
 	}
@@ -787,7 +787,8 @@ static CommandCost DoClearBridge(TileIndex tile, DoCommandFlag flags)
 		}
 	}
 
-	return CommandCost(EXPENSES_CONSTRUCTION, (GetTunnelBridgeLength(tile, endtile) + 2) * _price[PR_CLEAR_BRIDGE]);
+	Money base_cost = (GetTunnelBridgeTransportType(tile) != TRANSPORT_WATER) ? _price[PR_CLEAR_BRIDGE] : _price[PR_CLEAR_AQUEDUCT];
+	return CommandCost(EXPENSES_CONSTRUCTION, (GetTunnelBridgeLength(tile, endtile) + 2) * base_cost);
 }
 
 /** Remove a tunnel or a bridge from the game.
diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
index d1d02d0ba2..c3aadec8a9 100644
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -246,7 +246,7 @@ static CommandCost DoBuildLock(TileIndex tile, DiagDirection dir, DoCommandFlag
 		MarkCanalsAndRiversAroundDirty(tile - delta);
 		MarkCanalsAndRiversAroundDirty(tile + delta);
 	}
-	cost.AddCost(_price[PR_CLEAR_WATER] * 3 / 4);
+	cost.AddCost(_price[PR_BUILD_LOCK]);
 
 	return cost;
 }
@@ -281,7 +281,7 @@ static CommandCost RemoveLock(TileIndex tile, DoCommandFlag flags)
 		MarkCanalsAndRiversAroundDirty(tile + delta);
 	}
 
-	return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_WATER] * 2);
+	return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_LOCK]);
 }
 
 /** Builds a lock.
@@ -360,7 +360,7 @@ CommandCost CmdBuildCanal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32
 			MarkCanalsAndRiversAroundDirty(tile);
 		}
 
-		cost.AddCost(_price[PR_CLEAR_WATER]);
+		cost.AddCost(_price[PR_BUILD_CANAL]);
 	}
 
 	if (cost.GetCost() == 0) {
@@ -376,6 +376,7 @@ static CommandCost ClearTile_Water(TileIndex tile, DoCommandFlag flags)
 		case WATER_TILE_CLEAR: {
 			if (flags & DC_NO_WATER) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
 
+			Money base_cost = IsCanal(tile) ? _price[PR_CLEAR_CANAL] : _price[PR_CLEAR_WATER];
 			/* Make sure freeform edges are allowed or it's not an edge tile. */
 			if (!_settings_game.construction.freeform_edges && (!IsInsideMM(TileX(tile), 1, MapMaxX() - 1) ||
 					!IsInsideMM(TileY(tile), 1, MapMaxY() - 1))) {
@@ -395,7 +396,8 @@ static CommandCost ClearTile_Water(TileIndex tile, DoCommandFlag flags)
 				DoClearSquare(tile);
 				MarkCanalsAndRiversAroundDirty(tile);
 			}
-			return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_WATER]);
+
+			return CommandCost(EXPENSES_CONSTRUCTION, base_cost);
 		}
 
 		case WATER_TILE_COAST: {