| gptkbp:instanceOf | gptkb:reservoir 
 | 
                        
                            
                                | gptkbp:catchmentArea | 37.5 km² 
 | 
                        
                            
                                | gptkbp:completedIn | 1894 
 | 
                        
                            
                                | gptkbp:country | gptkb:United_Kingdom 
 | 
                        
                            
                                | gptkbp:createdBy | gptkb:water_supply gptkb:Manchester_Corporation
 
 | 
                        
                            
                                | gptkbp:dam | 23 m 396 m
 earth embankment
 
 | 
                        
                            
                                | gptkbp:damVolume | 1,800,000 m³ 
 | 
                        
                            
                                | gptkbp:elevation | 178 m 
 | 
                        
                            
                                | gptkbp:formedByDamming | River Thirlmere 
 | 
                        
                            
                                | gptkbp:hasAqueduct | gptkb:Thirlmere_Aqueduct 
 | 
                        
                            
                                | gptkbp:hasDam | Thirlmere Dam 
 | 
                        
                            
                                | gptkbp:hasIsland | gptkb:Deer_Island Armboth Island
 Birk Crag Island
 Birkside Island
 Brackenrigg Island
 Brown How Island
 Castle Crag Island
 Fisher Crag Island
 Great How Island
 Hawes How Island
 Hawes Point Island
 Long Moss Island
 Raven Crag Island
 Whelpside Island
 Wythburn Island
 
 | 
                        
                            
                                | gptkbp:hasRecreation | birdwatching cycling
 fishing
 walking
 
 | 
                        
                            
                                | gptkbp:inflow | gptkb:Launchy_Gill gptkb:Wyth_Burn
 Dob Gill
 
 | 
                        
                            
                                | gptkbp:length | 6.4 km 
 | 
                        
                            
                                | gptkbp:locatedIn | gptkb:England gptkb:Lake_District
 gptkb:Cumbria
 
 | 
                        
                            
                                | gptkbp:managedBy | gptkb:United_Utilities 
 | 
                        
                            
                                | gptkbp:mapType | gptkb:United_Kingdom_Lake_District 
 | 
                        
                            
                                | gptkbp:maximumDepth | 36 m 
 | 
                        
                            
                                | gptkbp:nearestCity | gptkb:Grasmere gptkb:Keswick
 
 | 
                        
                            
                                | gptkbp:notableFor | gptkb:Thirlmere_Aqueduct Victorian engineering
 scenic beauty
 walking trails
 controversy over flooding villages
 
 | 
                        
                            
                                | gptkbp:originalLakes | Leathes Water Wythburn Water
 
 | 
                        
                            
                                | gptkbp:osGridReference | NY319140 
 | 
                        
                            
                                | gptkbp:outflow | gptkb:St._John's_Beck 
 | 
                        
                            
                                | gptkbp:partOf | Lake District National Park 
 | 
                        
                            
                                | gptkbp:receivesWaterFrom | gptkb:Manchester 
 | 
                        
                            
                                | gptkbp:reservoirCapacity | 29.5 million m³ 
 | 
                        
                            
                                | gptkbp:surface | 3.33 km² 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Manchester_Corporation_Waterworks gptkb:Manchester_water_supply_system
 gptkb:Harrop_Tarn
 gptkb:Raven_Crag
 gptkb:Thirlmere_Aqueduct
 
 | 
                        
                            
                                | gptkbp:bfsLayer | 8 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Thirlmere Reservoir 
 |