524000 526000 528000 530000 532000 534000 188000 188000

Highgate

Hampstead Town 186000 186000

Frognal and Fitzjohns

West

Swiss Cottage with 184000 184000

St. Pancras and Somers Town

Regent's Park

King's Cross

Bloomsbury 182000 182000

Holborn and

524000 526000 528000 530000 532000 534000 Coordinate System: Camden Geological, Hydrogeological Scale at A3: 1:30,000 British National Grid Legend GCS_OSGB_1936 and Hydrological Study Borough of Camden Railway Lines ¯ Camden Administrative Boundaries Camden Wards A Roads 00.5 1 2 3 Kilometers 213923 FIGURE 1 524000 526000 528000 530000 532000 534000 188000 188000 186000 186000 184000 184000 182000 182000

524000 526000 528000 530000 532000 534000 Data source - BGS Mapping - Scale 1:10,000 Legend Camden Geological, Hydrogeological BGS 1:10K Artificial Ground BGS 1:10K Drift Geology BGS 1:10K Solid Geology Scale at A3: 1:30,000 Coordinate System: Railway Lines MADE GROUND ALLUVIUM BAGSHOT FORMATION and Hydrological Study British National Grid A Roads WORKED GROUND HACKNEY GRAVEL FORMATION CLAYGATE MEMBER Camden Geological Map ¯ GCS_OSGB_1936 LANGLEY SILT FORMATION LAMBETH GROUP LYNCH HILL GRAVEL FORMATION LONDON CLAY FORMATION 00.5 1 2 3 STANMORE GRAVEL FORMATION 213923 FIGURE Kilometers NB: Geological boundaries are largely indicative based on available geological mapping data 3 524000 526000 528000 186000 186000

524000 526000 528000 Legend Data Source: BGS Mapping - Scale 1:10,000 Camden Geological, Hydrogeological London Borough of Camden BGS 1:10K Artificial Ground BGS 1:10K Drift Geology BGS 1:10K Solid Geology Coordinate System: Railway Lines MADE GROUND ALLUVIUM BAGSHOT FORMATION and Hydrological Study Scale at A3: 1:15,000 British National Grid A Roads WORKED GROUND HACKNEY GRAVEL FORMATION CLAYGATE MEMBER North Camden Geological Map GCS_OSGB_1936 LANGLEY SILT FORMATION LAMBETH GROUP ¯ LYNCH HILL GRAVEL FORMATION LONDON CLAY FORMATION 00.25 0.5 1 1.5 STANMORE GRAVEL FORMATION 213923 FIGURE 4 NB. Geological boundaries are largely indicative based on available geological mapping data Kilometers 526000 528000 530000 184000 184000 182000 182000

526000 528000 530000 Data source: BGS Mapping - Scale 1:10,000 Legend Camden Geological, Hydrogeological London Borough of Camden BGS 1:10K Artificial Ground BGS 1:10K Drift Geology BGS 1:10K Solid Geology Coordinate System: and Hydrological Study Scale at A3: 1:15,000 Railway Lines MADE GROUND ALLUVIUM BAGSHOT FORMATION British National Grid A Roads WORKED GROUND HACKNEY GRAVEL FORMATION CLAYGATE MEMBER South Camden Geological Map GCS_OSGB_1936 LANGLEY SILT FORMATION LAMBETH GROUP ¯ LYNCH HILL GRAVEL FORMATION LONDON CLAY FORMATION 00.25 0.5 1 1.5 STANMORE GRAVEL FORMATION 213923 FIGURE 5 Kilometers NB. Geological boundaries are largely indicative based on available geological mapping data 530000 532000 182000 182000

530000 532000 Data source: BGS Mapping - Scale 1:10,000 Legend Camden Geological, Hydrogeological London Borough of Camden RTD Thickness Contours BGS 1:10K Drift Geology BGS 1:10K Solid Geology Scale at A3: 1:10,000 Coordinate System: Railway Lines BGS 1:10K Artificial Ground ALLUVIUM BAGSHOT FORMATION and Hydrological Study British National Grid A Roads MADE GROUND HACKNEY GRAVEL FORMATION CLAYGATE MEMBER River Terrace Deposit Thickness Contours GCS_OSGB_1936 WORKED GROUND LANGLEY SILT FORMATION LAMBETH GROUP ¯ LYNCH HILL GRAVEL FORMATION LONDON CLAY FORMATION STANMORE GRAVEL FORMATION 00.2 0.4 0.8 1.2 NB. Geological boundaries are largely indicative based on available geological mapping data 213923 FIGURE 6 Kilometers

Camden Geological, Hydrogeological Source - British Geological Society, 1:50,000 Series and Hydrological Study and Wales Sheet 256 – Geological Long Section (NW – SE)

213923 FIGURE 7 524000 526000 528000 530000 532000 534000 188000 188000 186000 186000 184000 184000 182000 182000

524000 526000 528000 530000 532000 534000 Environment Agency Aquifer Designation based on BGS Mapping Legend Camden Geological, Hydrogeological Borough of Camden Aquifer Designation Source Protection Zone and Hydrological Study Scale at A3: 1:30,000 Coordinate System: Railway Lines Secondary A Aquifer Outer Source Protection Zone British National Grid Camden Aquifer Designation Map ¯ GCS_OSGB_1936 A Roads Unproductive Strata Inner Source Protection Zone 00.5 1 2 3 NB. Aquifer boundaries are indicative based on available geological mapping data 213923 FIGURE 8 Kilometers

Camden Geological, Hydrogeological and Hydrological Study Conceptual Ground Model

213923 FIGURE 9