Broad Lough is a tidal estuary and intertidal coastal lagoon located just north of Wicklow Town, fed by the Vartry River and draining to the Irish Sea via Wicklow Harbour through the short Leitrim River. It is a long, shallow, brackish lagoon held behind The Murrough, a sand-and-shingle spit that carries the Dublin–Wexford railway line. The primary paddling access is through the commercial operator Wicklow Kayaking, which offers kayak and canoe rentals for use in their designated area on the Vartry River and Broad Lough. This service is based at the Wicklow Enterprise Centre in Wicklow Town, and rentals are for use within that specific zone and cannot be taken elsewhere. The area is suitable for paddlers aged eight and over. The lough's tidal nature is its defining characteristic for paddlers; it is essential to consult tide information, as the water level and exposed mudflats change significantly. The best birdwatching occurs at low tide when waders move in to feed, suggesting paddling may be more feasible around higher water levels to access more of the basin. The surrounding landscape is fringed with reed beds, sea rush, and salt-marsh grass on the inland side, with dunes and marram grass on the seaward spit. The Victorian Tinakilly House overlooks the lagoon from an oak-lined avenue. There are no boardwalks, signage, or facilities at the water's edge, contributing to a quiet, natural experience focused on wildlife observation. The area is recognized for its birdlife, including wintering ducks, teal, little grebes, kingfishers, and little egrets. Paddlers should be mindful of nesting birds from March to August and keep a distance from reed beds during this season. The water is gentle, making it suitable for relaxed exploration. Given the exposure to the windswept Wicklow coast and the open, shallow nature of the lagoon, paddlers should be prepared for potential wind and fetch. The connection to Wicklow Harbour via a short river also implies the possibility of encountering boat traffic if venturing near that channel.