Subcatchment:Alltwalis - headwaters to confluence with Gwili

Catchment

River basin district	Western Wales
River basin	Loughor to Taf

Subcatchment

River name	Alltwalis - headwaters to confluence with Gwili
Area category	10 - 100 km²
Area (km2)
Maximum altitude category	200 - 500 m
Maximum altitude (m)	354354 m <br />0.354 km <br />35,400 cm <br />
Dominant geology	Siliceous
Ecoregion	Great Britain
Dominant land cover	Improved grassland
Waterbody ID	GB110060036130

Location: 51° 56' 31.92" N, 4° 17' 56.40" W

Loading map...

{"format":"googlemaps3","type":"ROADMAP","minzoom":false,"maxzoom":false,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"limit":5000,"offset":0,"link":"all","sort":[""],"order":[],"headers":"show","mainlabel":"","intro":"","outro":"","searchlabel":"... further results","default":"","import-annotation":false,"width":"99%","height":"300px","centre":false,"title":"","label":"","icon":"Red_marker.png","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"visitedicon":"","wmsoverlay":false,"zoom":14,"layers":[],"controls":["pan","zoom","type","scale","streetview","rotate"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"resizable":false,"kmlrezoom":false,"poi":true,"cluster":false,"clustergridsize":60,"clustermaxzoom":20,"clusterzoomonclick":true,"clusteraveragecenter":true,"clusterminsize":2,"imageoverlays":[],"kml":[],"gkml":[""],"searchmarkers":"","fullscreen":false,"scrollwheelzoom":false,"showtitle":false,"hidenamespace":true,"template":"Subcatchment Popup","userparam":"","activeicon":"","pagelabel":false,"ajaxcoordproperty":"","ajaxquery":"","locations":[{"text":"\u003Cp\u003ERiver Name\u0026#160;: Alltwalis - headwaters to confluence with Gwili\n\u003C/p\u003E\u003Cp\u003EArea category\u0026#160;: 10 - 100 km\u00b2\n\u003C/p\u003E\u003Cp\u003E\u003Cbr /\u003E\n\u003C/p\u003E","title":"Alltwalis - headwaters to confluence with Gwili","link":"","lat":51.9422,"lon":-4.299,"icon":"/wiki/images/a/af/Red_marker.png"}]}

Left click to look around in the map, and use the wheel of your mouse to zoom in and out.

List of case studies in this subcatchment

There are currently no case studies in this subcatchment. You can assign a case study to this subcatchment from the "Catchment and subcatchment" section of any case study page.

• Search for case studies.
• View a list of new case studies
• View a list of recently updated case studies