Best tile for river dike?

[exsonic01]

What might be the best tile for river dike or riverbank / floodbank? Like these pictures:




River is enveloped by riverbank + dirt road on top of the bank. These features can be used as cover line for tanks to try hull-down position, or infantry for cover.

What might be the best tile for them? I think this feature should have no concealment as not that much to hide, but should have high relief/cover value as units can hide themselves.

I'm thinking of tree rows or tree + dirt road, but those have no cover value... Stream tile looks the best one as it has 50 relief and 30 cover, but it seems those water should be regarded as impassible because of width shown in satellite image.

What might be the best choice for river banks? Just use stream tile for all water channel with bank?

ps) Suggestion for future:
How about making passable / impassable water tile with some cover and relief value, based on assumption of riverbank? Make relief and cover only work for boundary of waters, and implement slight graphical hint of river bank...

[Hub6Actual]

Maybe the tile doesn’t matter - depending on how fine the elevation modeling is, maybe it could be any tile, just a couple of metres higher. There are some flood dikes around where I live, and they average around three metres high. Most are pretty narrow, but there is one with a road on top of it, two lanes, so the dike must be roughly ten metres across?

[exsonic01]

ORIGINAL: Hub6Actual
Maybe the tile doesn’t matter - depending on how fine the elevation modeling is, maybe it could be any tile, just a couple of metres higher. There are some flood dikes around where I live, and they average around three metres high. Most are pretty narrow, but there is one with a road on top of it, two lanes, so the dike must be roughly ten metres across?

Unfortunately, it seems that SRTM data for height.bmp of this region does not contains the elevation information for riverbanks.

It is true that riverbanks + river tile is tricky to model: Usually dikes has road on top of it, so it should have good mobility. But river / stream itself would have low mobility. It differs by region, but typical riverbank is usually build up to 2~5m of height to prevent flooding. Sometimes this can be a good cover / defilade place.

I think I will just use stream for those features. And I will just ignore really narrow water streams (less than 3m width) to support water to rice paddy or other crop fields.