All swimming spots › Monaghan, Ireland
Can I swim at Hollywood Lake?
Monaghan, Ireland · Lake
Checking…
Before you get in
Inland water is cold all year, and there are no lifeguards here.
If you get into trouble, float on your back until the cold shock passes. Full advice below.
In an emergency call 999, or 112 in the Republic of Ireland.
Water quality today
The last fortnight
What this verdict covers
Independent site, not an official one. This verdict is about water quality. It does not tell you whether the water is safe to get into today.
How it has been rated
The annual grade, which is worked out from bacterial samples taken over several seasons.
Every sample, 2022 to 2026
20 samples, 2022 to 2026. The highest E. coli count in them was 700 per 100ml, on 19 July 2022; the standard for Excellent is 500 or below and for Good 1,000 or below.
One bar for each sample, oldest on the left. The taller the bar, the more E. coli that bottle held.
The scale is the same on every beach on this site, which is why a clean beach looks flat — the bars are measured against the standard rather than against that beach’s own worst day. Hover or tap a bar for that day’s figures. A single count over a line is not a failed beach. The classification is worked out as the 90th and 95th percentile of four years of samples, so one bad morning does not decide it — and one good morning does not either.
What these bacteria mean for you
Neither one is what makes people ill by itself. They are markers: they live in the gut, so finding them means sewage or animal waste has reached the water, and whatever else came with it is likely there too.
The usual way to catch something is swallowing the water, and the usual result is a stomach upset. Ear, eye, chest and skin infections are the other common ones. Putting your head under and swimming with an open cut both raise the odds.
The riskiest time is the day or two after heavy rain, when storm overflows discharge and rain washes off farmland — including at beaches rated Excellent for the rest of the season. That is the whole reason this page shows you rainfall and discharges alongside the grade.
Hollywood Lake does not currently carry an annual bathing water classification.
The local authority publishes bathing restrictions and sample results for this beach. No storm overflow data is published in the Republic at all, so sewage discharges cannot be checked here.
The rest of its file
What the regulator holds for this place. None of it describes the water today.
- Water
- Lake
- Area
- Monaghan, Ireland
- Storm overflows
- No data published in the Republic
Wind, water and weather
The weather here today and for the week ahead. Not the water quality verdict above.
Today
Rain, the week behind and ahead
The weather for the week ahead
Water temperature
There is no water temperature for this place, and no honest way to give one. Nobody publishes a live temperature for Britain and Ireland’s rivers and lakes: SEPA and Natural Resources Wales measure none at all, and the satellite products that cover lakes do not include this one and run weeks behind.
Air temperature is not a substitute. Inland water stays cold through the summer, and it is coldest relative to the air on the warm still days when most people get in. The RNLI says inland water like lakes, rivers, lochs and reservoirs can be colder than the sea, even in summer, and it defines cold water as anything below 15°C. Cold water can seriously affect your breathing and your ability to move. Treat this water as cold, get in slowly, and know how to float.
Where it is, and what discharges near it
Directions to this bathing water
That is the published location for this bathing water, which is at the water rather than at a car park. Your maps app will take you to the nearest road it can reach.
No car park is mapped within 800m of here in OpenStreetMap. That is a gap in the map as much as it is a fact about the place.
What is mapped at this beach
- Toilets about 90m away
Straight-line distances from OpenStreetMap, not walking distances, and only what volunteers have mapped — something missing here may still be there.
Other swimming spots nearby
The closest bathing waters on the regulators’ lists, straight-line distance. Each has its own checks and its own verdict.
Check the official source
beaches.ie publishes no page for this individual bathing water, so there is none to link to. What this page says about it comes from that regulator’s own data, listed at the bottom.
This page is not official. It reads published data and presents it plainly; if a sign at the water says otherwise, believe the sign.
If you get into trouble
This is the RNLI’s advice, not ours.
Float. Tilt your head back with your ears in the water. Relax and let your breathing settle. Move your hands and legs gently to stay level. Your legs may sink, and that is fine, everyone floats differently. The first shock of cold water passes in less than a minute, so do not try to swim straight away. Once it has passed, call for help or swim to safety.
In an emergency call 999 and ask for the fire service, or for the Coastguard at a tidal river. In the Republic of Ireland call 112 or 999.
Inland water has its own hazards and none of them are visible from the bank. The bottom shelves away without warning, weeds and submerged branches catch legs, and a river runs faster and colder after rain than it looks from the side. There are no lifeguards and no flags at almost every place on this list.
Never jump in. You cannot see what is under the surface, and the cold on entry is what causes the gasp, not the depth.
This advice is the RNLI’s. Their Float to Live pages are worth two minutes of anyone’s time.
Use this page elsewhere
One sheet of A4 with a QR code to this page, for a clubhouse, a campsite reception, a surf school or a harbour office. The address is printed underneath in words, so it still works for anybody who would rather not scan a code.
Print a sign for Hollywood LakeOr put today’s verdict on your own site.
Put this swimming spot on your own site
A small card showing today’s verdict for Hollywood Lake, updating itself. Paste this where you want it to appear. It loads nothing of yours and sets no cookies, and it costs your visitors about ten kilobytes, most of it the readings themselves.
Click the box to select it all. There is also a feed for this swimming spot, if you would rather be told than have to look.