page_title: Herdsman Lake
section_title: Description
hierarchical_section_title: Herdsman Lake / Description
caption_attribution_description: Black Swan, Cygnus atratus in flight at Herdsman Lake Western Australia
context_page_description: Herdsman Lake, also known as Herdsmans Lake, is a freshwater lake located on the Swan Coastal Plain, 6 kilometres north-west of Perth, Western Australia, in the suburb of Herdsman.
context_section_description: The lake is encompassed by Herdsman Lake Regional Park. It measures 2.5 kilometres (1.6 mi) in length, and 2 kilometres (1.2 mi) in width, totaling over 3 square kilometres (1.2 sq mi). The perimeter of the lake is dredged to provide permanent open water, 15% of the area, during the dry summer months. The lake is a wildlife sanctuary, with birdwatching a popular activity.
  Almost 80% of the lake is covered with Typha rush (Typha orientalis), an introduced weed. In summer, most of the lake is dry. 15% of the lake is permanent deep water. In the 1830s, the lake was a possible water supply for Perth. In 1936, the lake was almost used as an alternative airport. Herdsman Lake was declared a regional park in 1999.
  The Herdsman Main Drain is a 4-kilometre (2.5 mi) x 1,000-millimetre (39 in) underground pipe drain carrying excess water from the lake to its outflow at City Beach.
caption: Black swan in flight Herdsman Lake
exif: {"Image Make": "EASTMAN KODAK COMPANY", "Image Model": "KODAK Z7590 ZOOM DIGITAL CAMERA", "Image Orientation": "Horizontal (normal)", "Image XResolution": "230", "Image YResolution": "230", "Image ResolutionUnit": "Pixels/Inch", "Image YCbCrPositioning": "Centered", "Image ExifOffset": "504", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail Orientation": "Horizontal (normal)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "3806", "Thumbnail JPEGInterchangeFormatLength": "5000", "EXIF ExposureTime": "1/800", "EXIF FNumber": "33/10", "EXIF ExposureProgram": "Portrait Mode", "EXIF ISOSpeedRatings": "80", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2006:05:17 10:28:14", "EXIF DateTimeDigitized": "2006:05:17 10:28:14", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ShutterSpeedValue": "48/5", "EXIF ApertureValue": "17/5", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "17/5", "EXIF MeteringMode": "Pattern", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "79/2", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "2576", "EXIF ExifImageLength": "1932", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "3502", "EXIF ExposureIndex": "80", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera", "EXIF SceneType": "Directly Photographed", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "0", "EXIF FocalLengthIn35mmFilm": "238", "EXIF SceneCaptureType": "Standard", "EXIF GainControl": "None", "EXIF Contrast": "Normal", "EXIF Saturation": "Normal", "EXIF Sharpness": "Normal", "EXIF SubjectDistanceRange": "0"}