Chinook Abundance - Point Features [ds180]

The CalFish Abundance Database contains a comprehensive collection of anadromous fisheries abundance information. Beginning in 1998, the Pacific States Marine Fisheries Commission, the California Department of Fish and Game, and the National Marine Fisheries Service, began a cooperative project aimed at collecting, archiving, and entering into standardized electronic formats, the wealth of information generated by fisheries resource management agencies and tribes throughout California.Extensive data are currently available for chinook, coho, and steelhead. Major data categories include adult abundance population estimates, actual fish and/or carcass counts, counts of fish collected at dams, weirs, or traps, and redd counts. Harvest data has also been compiled for many streams.This CalFish Abundance Database shapefile was generated from fully routed 1:100,000 hydrography. In a few cases streams had to be added to the hydrography dataset in order to provide a means to create shapefiles to represent abundance data associated with them. Streams added were digitized at no more than 1:24,000 scale based on stream line images portrayed in 1:24,000 Digital Raster Graphics (DRG).These features represent abundance information resulting from counts at weirs, fish ladders, or other point-type monitoring protocols such as beach seining. The point features in this layer typically represent the location for which abundance data records apply. In many cases there are multiple datasets associated with the same point location, and so, point features overlap. Please view the associated datasets for detail regarding specific features. In CalFish these are accessed through the "link" field that is visible when performing an identify or query operation. A URL string is provided with each feature in the downloadable data which can also be used to access the underlying datasets.The chinook data that is available via the CalFish website is actually linked directly to the StreamNet website where the database's tabular data is currently stored. Additional information about StreamNet may be downloaded at http://www.streamnet.org. Complete documentation for the StreamNet database may be accessed at http://www.streamnet.org/online-data/data_develop.html#Other sections: Spatial Data Organization: Direct_Spatial_Reference_Method: VectorPoint_and_Vector_Object_Information: SDTS_Terms_Description:SDTS_Point_and_Vector_Object_Type: Entity pointPoint_and_Vector_Object_Count: 51Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name:Albers Conical Equal AreaAlbers_Conical_Equal_Area: Albers Conical Equal Area Standard_Parallel: 34.000000 Standard_Parallel: 40.500000 Longitude_of_Central_Meridian: -120.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 0.000000 False_Northing: -4000000.000000Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pairCoordinate_Representation: Abscissa_Resolution:0.000000Ordinate_Resolution: 0.000000Planar_Distance_Units: meters Geodetic_Model:Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name:Geodetic Reference System 80 Semi-major_Axis: 6378137.000000Denominator_of_Flattening_Ratio: 298.257222Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Resolution:1.000000 Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinatesEntity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Label: ds180Attribute: Attribute_Label: SHAPEAttribute_Definition: Feature geometry.Attribute_Definition_Source: ESRIAttribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features.Attribute: Attribute_Label: FIDAttribute_Definition: Internal feature number.Attribute_Definition_Source: ESRIAttribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.Attribute: Attribute_Label: LINKAttribute_Definition: Provides a link from the spatial query to the underlying abundance database informationAttribute_Value_Accuracy_Information:Attribute: Attribute_Label: OBS_TYPEAttribute_Definition: Observation type: Indicates whether fish were counted in a single stream or multiple streamsAttribute: Attribute_Label: LOCATIONAttribute_Definition: Describes the location data were collected - the name of the stream when the observation is for a single stream or a location description when the observation includes more than one stream.Attribute: Attribute_Label: CATEGORYAttribute_Definition: Indicates the general data category such as "Dam or weir counts" or "Hatchery returns"Attribute: Attribute_Label: SPECIESAttribute_Definition: Only chinook data are contained in this shapefileAttribute: Attribute_Label: RUNAttribute_Definition: Indicates the fish run, such as fall-run chinook.Attribute: Attribute_Label: STAGEAttribute_Definition: Indicates the life stage of the fishAttribute: Attribute_Label: OBSAttribute_Definition: Observations: Indicates the number of data records in the set that include fish observations - has no relation to the number of fish countedAttribute_Value_Accuracy_Information:Attribute_Value_Accuracy: Drawn from the database for each escapement data record where the count value is not null.Attribute: Attribute_Label: MEANAttribute_Definition: A mean developed from the number of fish estimated or counted during each recorded observation - the accuracy of the mean varies with each datasetAttribute_Value_Accuracy_Information:Attribute_Value_Accuracy: This number is intended to provide a general indicator of populations associated with the dataset. Please use the 'LINK' provided to access the actual data. Although datasets are grouped to include counts generated from the same location and with similar methods, not every count included in a dataset is comparable. Variations in the dataset occur for a variety of reasons. Some are related to events that occur in the field, as when a fish ladder is not in operation for the same hours each week, or when a weir is removed later or earlier than in other years. Additional variations occur during the data compilation process, such as when locations or methods are not clearly specified in the original report. Whenever they are available, comments related to the accuracy and comparability of each count are included in the dataset. In all cases the original document provides the best means of determining if counts are comparable.Attribute: Attribute_Label: LATESTAttribute_Definition: The most current year for which data have been compiled.Attribute: Attribute_Label: TRENDIDAttribute_Definition: Used internally to identify items in a datasetAttribute: Attribute_Label: BEGFTAttribute_Definition: Begin foot: Establishes the point of observation - such as the location that a weir was installed. Its accuracy varies among datasets. These measures are used in conjunction with the LLID for mapping purposes. The hydrography is routed to begin at the mouth and extend upstream to the headwaters.Attribute_Value_Accuracy_Information:Attribute_Value_Accuracy: These measures are used to generate the shapfiles and don't compare well to hip chain measures.Attribute: Attribute_Label: FEATAttribute_Definition: Feature type: Indicates whether a feature is linear such as a stream survey or a point feature such as a dam or fish weir. All features in this shapefile are point features.Attribute: Attribute_Label: LLIDAttribute_Definition: Latitude-Longitude ID: A unique identifier assigned to each stream in the hydrography datasetAttribute_Definition_Source: 1:100,000 Routed HydrographyAttribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features.Attribute_Value_Accuracy_Information:Attribute_Value_Accuracy: LLIDs are unique to each hydrography dataset. LLIDs in this hydrography do not represent the same streams in the 1:24,000 Hydrography dataset or with other versions of 1:100,000 Hydrography datasetsAttribute: Attribute_Label: ShapeAttribute_Definition: Feature geometry.Attribute_Definition_Source: ESRIAttribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features.

Data quality information