http://www.tvas.co.uk/reports/pdf/CQW08_08-12ev.pdf
Trench 13 (Plate 1)
This trench was 20.10m long and 1m deep at the south-eastern end of the trench sloping up to 0.50m at the north-west. The stratigraphy encountered consisted of 0.15-20m topsoil overlying a yellow orange brickearth. At the southern end of the trench an old water channel of post-medieval date (3) was recorded aligned north north east - south south west. This corresponds to a bend in the channel of the Pymmes Brook depicted on the First Edition Ordnance Survey maps of 1866 and 1896 (Fig. 6). Only the northern edge was exposed and thus its true width was not observed, but it was over 5.5m wide. A slot through it showed topsoil , 0.15m, sealing a lens of yellow clay silt deposit 0.20m which overlay a layer of buried soil c. 0.25m deep which in turn sealed a fill of the channel, a pale yellow silty clay (56), which was excavated to a depth of 0.90m and not bottomed at this depth.
Trench 20 (Plate 2)
This trench was 21.10m long and 0.7m deep, orientated south west - north east. The stratigraphy encountered in this trench consisted of 0.5m of topsoil above 0.10m of subsoil over a clayey brickearth. A ditch aligned north east - south west was observed, A slot (2) excavated through it showed it to be shallow, over 1.2m wide but only 0.20m deep, and from its orange grey sandy clay fill (55) a sherd of red glazed post medieval earthenware was retrieved.
Trench 23 (Plate 3)
This trench was 20.56m long and 0.45m deep, orientated south east - north west. The stratigraphy encountered in this trench consisted of 0.5m of topsoil above 0.10m of subsoil over a clayey brickearth. A continuation of ditch 2 was observed aligned north east - south west. A slot (1) excavated through it showed it to be over 1.60m wide and 0.58m deep. It contained three fills (52, 53 and 54) and from its upper fill a light brown silty clay (52) four sherds of creamware, two sherd of pearlware of mid 18th century-early 19th century date and five sherds of red earthenware 1550+, a tin glazed sherd of 17th-19th century date , three clay pipe stems, a sherd of green bottle glass, three iron nails, two tile fragments, wood fragment (non waterlogged) and two burnt flint fragments were retrieved.
Trench 26 (Plate 4)
This trench was 29.0m long and 0.61m deep, orientated south – north. The stratigraphy encountered in this trench consisted of 0.5m of topsoil above 0.10m of subsoil over a clayey brickearth. A ditch aligned north east - south west was observed (4) which was probably the continuation of the ditch 1 and 2 recorded in trenches 20 and 23. This was recorded at 2.80m wide.
Monday, 9 November 2009
Sunday, 8 November 2009
The National River Flow Archive
38022 - Pymmes Brook at Edmonton Silver Street
Sample Hydrograph of Gauged Daily Flows
Flow Duration Curve for Gauged Daily Flows
Station Description
Crump weir (width: 6.16m) in concrete channel, installed in 1972; superseded a rated trapezoidal section, data from 1954 (rating change in 1963; series reprocessed). Few confirmatory gaugings at high flows. Rarely overtopped. Drowns regularly (c0.7m stage) - flows corrected since 1982; previous high flows under review. Pre-1965 runoff substantially enhanced by sewage effluent (now treated outside catchment). Currently no significant abstractions or discharges.Catchment Description
Impervious (London Clay) catchment. Pymmes Brook rises on Enfield Chase but catchment is now approx. 60% urban.Factors Affecting Runoff
- Natural to within 10% at the 95 percentile flow.
River Flow and Catchment Rainfall on the National River Flow Archive
| Gauged Daily Flows (gdf): | 1954 to 2006 |
| Monthly Catchment Rainfall (rnf): | 1961 to 2006 |
| Datatype | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| gdf | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| rnf | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
NRFA Home Page
Station Summaries
Regional Maps
Data Holdings
http://www.nerc-wallingford.ac.uk/ih/nrfa/station_summaries/038/022.html
Areas of Archaeological Importance
The UDP identifies a small parcel of land either side of Green Lanes at the intersection with Grenoble Gardens and between Kelvin Avenue and Melbourne Avenue as an area of archaeological importance (Figure 3.3).
Policy (I) C1 states that, where appropriate, areas, buildings and landscape features of archaeological, architectural or historic interest, together with their character and settings, are preserved or enhanced.
Policy (I) C1 states that, where appropriate, areas, buildings and landscape features of archaeological, architectural or historic interest, together with their character and settings, are preserved or enhanced.
PLANNING COMMITTEE - 26th April 2007 - Application Number: TP/06/1845 - Ward: Bowes
http://governance.enfield.gov.uk/Published/C00000124/M00004523/AI00006058/AGENDAREPORTS26APR07.pdf
19. That all existing vegetation, trees and hedgerows and on the north, west and southern boundaries shall be retained and shown on any detailed landscape proposal plans to be submitted to and approved by the Local Planning Authority. Such trees and hedgerows shall be enhanced by good horticultural practice including pruning, fertilising and underplanting.
Reason: To ensure that the important visual amenity of the existing trees and hedgerows is maintained and is not adversely affected by the proposed development hereby approved or any other activities associated with building works.
20. Details of a landscaped 'wildlife corridor' stretching along the length of the Pymmes Brook and measuring a minimum of 10m beyond the top of the bank (brink) of the Pymmes Brook in width shall be submitted to and approved by the Local Planning Authority; such proposal shall include an appropriate scheme of long term maintenance and management and the works shall be carried out within one year following occupation of the
development hereby granted consent.
Reason: To enhance the existing wildlife habitat of the area and the visual amenity of the development.
21. The development shall not commence until drawings showing detailed landscape proposals to include structure, design, species, size and spacing of plants and a written specification (including preparation of tree pits, tree ties, planting beds and grassed areas and details of outdoor furniture) and a Maintenance Plan have been submitted to and approved by the Local Planning Authority. The planting shall be carried out in accordance submitted and approved as reserved matters by the Local Planning Authority and the specification within the first season after completion or occupation of the development whichever is the sooner. The maintenance shall be carried out in accordance with the maintenance plan. Any planting which dies within 3 years of planting shall be replaced by the owner with new planting in accordance with the approved details.
Reason: To provide a satisfactory appearance for the development and within the surrounding area.
19. That all existing vegetation, trees and hedgerows and on the north, west and southern boundaries shall be retained and shown on any detailed landscape proposal plans to be submitted to and approved by the Local Planning Authority. Such trees and hedgerows shall be enhanced by good horticultural practice including pruning, fertilising and underplanting.
Reason: To ensure that the important visual amenity of the existing trees and hedgerows is maintained and is not adversely affected by the proposed development hereby approved or any other activities associated with building works.
20. Details of a landscaped 'wildlife corridor' stretching along the length of the Pymmes Brook and measuring a minimum of 10m beyond the top of the bank (brink) of the Pymmes Brook in width shall be submitted to and approved by the Local Planning Authority; such proposal shall include an appropriate scheme of long term maintenance and management and the works shall be carried out within one year following occupation of the
development hereby granted consent.
Reason: To enhance the existing wildlife habitat of the area and the visual amenity of the development.
21. The development shall not commence until drawings showing detailed landscape proposals to include structure, design, species, size and spacing of plants and a written specification (including preparation of tree pits, tree ties, planting beds and grassed areas and details of outdoor furniture) and a Maintenance Plan have been submitted to and approved by the Local Planning Authority. The planting shall be carried out in accordance submitted and approved as reserved matters by the Local Planning Authority and the specification within the first season after completion or occupation of the development whichever is the sooner. The maintenance shall be carried out in accordance with the maintenance plan. Any planting which dies within 3 years of planting shall be replaced by the owner with new planting in accordance with the approved details.
Reason: To provide a satisfactory appearance for the development and within the surrounding area.
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