TIDES AND TIDAL STREAMS It has been reported that the tidal streams at choke points along the Khawr ’Abd Allah and Khawr Shityanah reach up to 6 knots. Extreme care should be taken when in the area at lower low water; the tidal height has been reported to be one metre less than expected. In addition, a north-westerly wind can lower the height of tide by up to 0·2m and delay high and low water by about 30 minutes; a south-easterly wind will have the opposite effect.