It would appear that I have three types of waterway in Commondale ...
And it would appear that the problem is the the "Commondale Beck" is designated as a river from a standing start in the data set - nothing else flowing into it and nothing I can yet see that says "look, this is a
little river".
In 1489 station maps I have so far on our server, there are 4701 rivers, 11623 streams, 1896 ditches ... I would have expected the Commondale setup to have a stream flow into a river, or something else (list follows of the various water features I have across all the maps), but apparently not - not even a pond or a moat.
1 <tag k="waterway" v="boat"/>
1 <tag k="waterway" v="derelict_dock"/>
1 <tag k="waterway" v="dog"/>
1 <tag k="waterway" v="fairway"/>
1 <tag k="waterway" v="floodgate"/>
1 <tag k="waterway" v="mill"/>
1 <tag k="waterway" v="narrows"/>
1 <tag k="waterway" v="planned"/>
1 <tag k="waterway" v="pumping-station"/>
1 <tag k="waterway" v="stop_lock"/>
1 <tag k="waterway" v="water_gauge"/>
1 <tag k="waterway" v="water_level_monitor"/>
2 <tag k="waterway" v="debris_screen"/>
2 <tag k="waterway" v="dry_dock"/>
2 <tag k="waterway" v="intermittant"/>
2 <tag k="waterway" v="lake"/>
2 <tag k="waterway" v="port"/>
2 <tag k="waterway" v="proposed_canal"/>
2 <tag k="waterway" v="traffic_light"/>
2 <tag k="waterway" v="winding_point"/>
3 <tag k="waterway" v="basin"/>
3 <tag k="waterway" v="elsan_disposal"/>
3 <tag k="waterway" v="fish_pass"/>
3 <tag k="waterway" v="moat"/>
3 <tag k="waterway" v="tidal_channel"/>
3 <tag k="waterway" v="winding_hole"/>
4 <tag k="waterway" v="feature"/>
4 <tag k="waterway" v="lock"/>
4 <tag k="waterway" v="marina"/>
4 <tag k="waterway" v="spillway"/>
5 <tag k="waterway" v="steps"/>
6 <tag k="waterway" v="sluice"/>
7 <tag k="waterway" v="barrier"/>
8 <tag k="waterway" v="abandoned_canal"/>
8 <tag k="waterway" v="buoy"/>
9 <tag k="waterway" v="disused_canal"/>
9 <tag k="waterway" v="floating_barrier"/>
9 <tag k="waterway" v="junction"/>
9 <tag k="waterway" v="milestone"/>
9 <tag k="waterway" v="pumping_station"/>
9 <tag k="waterway" v="sluice_gate"/>
10 <tag k="waterway" v="fuel"/>
10 <tag k="waterway" v="pond"/>
10 <tag k="waterway" v="proposed"/>
10 <tag k="waterway" v="pump_out"/>
10 <tag k="waterway" v="waste_disposal"/>
13 <tag k="waterway" v="brook"/>
13 <tag k="waterway" v="flow_control"/>
15 <tag k="waterway" v="mooring"/>
18 <tag k="waterway" v="yes"/>
37 <tag k="waterway" v="sanitary_dump_station"/>
38 <tag k="waterway" v="waterfall"/>
44 <tag k="waterway" v="dam"/>
54 <tag k="waterway" v="water_point"/>
103 <tag k="waterway" v="boatyard"/>
120 <tag k="waterway" v="derelict_canal"/>
158 <tag k="waterway" v="turning_point"/>
283 <tag k="waterway" v="dock"/>
757 <tag k="waterway" v="weir"/>
1550 <tag k="waterway" v="lock_gate"/>
1896 <tag k="waterway" v="ditch"/>
3114 <tag k="waterway" v="drain"/>
3125 <tag k="waterway" v="canal"/>
4701 <tag k="waterway" v="river"/>
11623 <tag k="waterway" v="stream"/>
I have noted to take a specific look at what future developments do to the Commondale map ...