Days of heavy rain have flooded roads and boosted dam levels around Townsville. A slow-moving low pressure system has dumped more than 400mm of rain in the Townsville region during the last two days. Some of the heaviest falls during the 48 hours to 9am on Thursday included 453mm at Bluewater and 408mm at Stony Creek, while Townsville Airport collected 220mm. Townsville's 140mm during the 24 hours to 9am on Thursday was its heaviest daily rainfall total in four years. Major flood warnings were issued on Thursday morning for the Bohle River and the Haughton River Catchment, with a number of roads in the region completely submerged. While the flash and riverine flooding is an immediate concern, this week's tropical deluge is good news for Townsville's previously dwindling water storages. According data published on the Townsville City Council website, Townsville's Ross River Dam was at just 15 percent of its capacity last week. As of Thursday morning, the dam had risen to 52 per cent of its capacity for the first time in 2015. The low pressure system will track slowly towards the west during Thursday and Friday, spreading heavy rain and thunderstorms through parts of the Northern Goldfields and Upper Flinders, Gulf Country and North West districts. A number of forecast models indicate that this system will go on to cause heavy rain and flooding in parts of western and north west Queensland from this weekend and into next week. There is still some uncertainty regarding the movement of the low pressure system beyond Friday, so be sure to keep up to date with the latest forecasts and warnings.