Summer Steelhead Distribution [ds341]

SDE Feature Class

Open this dataset in BIOS
Download this dataset

Tags
environment, Central California Coast, South Central California Coast, Southern California Coast, biota, Northern California, Central Valley, California


Summary

To map steelhead observation based distribution in California.

Description

Summer Steelhead Distribution October 2009 Version This dataset depicts observation-based stream-level geographic distribution of anadromous summer-run steelhead trout, Oncorhynchus mykiss irideus (O. mykiss), in California. It was developed for the express purpose of assisting with steelhead recovery planning efforts. The distributions reported in this dataset were derived from a subset of the data contained in the Aquatic Species Observation Database (ASOD), a Microsoft Access multi-species observation data capture application. ASOD is an ongoing project designed to capture as complete a set of statewide inland aquatic vertebrate species observation information as possible. Please note: A separate distribution is available for winter-run steelhead. Contact information is the same as for the above. ASOD Observation data were used to develop a network of stream segments. These lines are developed by "tracing down" from each observation to the sea using the flow properties of USGS National Hydrography Dataset (NHD) High Resolution hydrography. Lastly these lines, representing stream segments, were assigned a value of either Anad Present (Anadromous present). The end result (i.e., this layer) consists of a set of lines representing the distribution of steelhead based on observations in the Aquatic Species Observation Database. This dataset represents stream reaches that are known or believed to be used by steelhead based on steelhead observations. Thus, it contains only positive steelhead occurrences. The absence of distribution on a stream does not necessarily indicate that steelhead do not utilize that stream. Additionally, steelhead may not be found in all streams or reaches each year. This is due to natural variations in run size, water conditions, and other environmental factors. The information in this data set should be used as an indicator of steelhead presence/suspected presence at the time of the observation as indicated by the 'Late_Yr' (Latest Year) field attribute. The line features in the dataset may not represent the maximum extent of steelhead on a stream; rather it is important to note that this distribution most likely underestimates the actual distribution of steelhead. This distribution is based on observations found in the ASOD database. The individual observations may not have occurred at the upper extent of anadromous occupation. In addition, no attempt was made to capture every observation of O. mykiss and so it should not be assumed that this dataset is complete for each stream. The distribution dataset was built solely from the ASOD observational data. No additional data (habitat mapping, barriers data, gradient modeling, etc.) were utilized to either add to or validate the data. It is very possible that an anadromous observation in this dataset has been recorded above (upstream of) a barrier as identified in the Passage Assessment Database (PAD). In the near future, we hope to perform a comparative analysis between this dataset and the PAD to identify and resolve all such discrepancies. Such an analysis will add rigor to and help validate both datasets. This dataset has recently undergone a review. Data source contributors as well as CDFG fisheries biologists have been provided the opportunity to review and suggest edits or additions during a recent review. Data contributors were notified and invited to review and comment on the handling of the information that they provided. The distribution was then posted to an intranet mapping application and CDFG biologists were provided an opportunity to review and comment on the dataset. During this review, biologists were also encouraged to add new observation data. This resulting final distribution contains their suggestions and additions. Please refer to "Use Constraints" section below.

Credits

Use limitations

Please read the metadata document completely prior to use of this dataset. Examples of appropriate uses include: - steelhead recovery planning - Evaluation of future survey sites for steelhead - Validating steelhead distribution models Examples of inappropriate uses include: - Assuming absence of a point feature means that steelhead are not present in that stream. - Using this data to make parcel or ground level land use management decisions. - Using this dataset to prove or support non-existence of steelhead at any spatial scale. - Assuming that the point feature represents the maximum possible extent of steelhead range.

Extent

West -124.354060 East -122.738669
North 42.037482 South 39.675939

Scale Range

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource biota, environment


* Content type Downloadable Data



Place keywords Central California Coast, South Central California Coast, Southern California Coast, Northern California, Central Valley, California

Theme keywords environment, biota

Thesaurus
Title ISO 19115 Topic Category




Citation

* Title DS0341_20110316


Presentation formats * digital map


Citation Contacts

Responsible party
Organization's name Connie Shannon PSMFC/ CDFG
Contact's role originator


Responsible party
Organization's name Tom Christy CDFG/NR/ERIS
Contact's role originator


Resource Details

Dataset languages English(UNITED STATES)


Status under development
Spatial representation type * vector


* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.2.3552


ArcGIS item properties
* Name DS0341_20110316
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Description
publication date
Temporal extent
Date and time 2009-01-01

Vertical extent
* Minimum value 0.000000
* Maximum value 0.000000


Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -124.354060
* East longitude -122.738669
* North latitude 42.037482
* South latitude 39.675939
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -13843030.588100
* East longitude -13663206.128700
* South latitude 4818961.726800
* North latitude 5166595.673900
* Extent contains the resource Yes

Resource Points of Contact

Point of contact
Organization's name California Department of Fish and Game Northern Region Environmental Resources Information Services
Contact's role point of contact


Contact information
Phone
Voice 530-225-2276
Voice 530-225-2155



Resource Maintenance

Resource maintenance
Update frequency irregular


Resource Constraints

Legal constraints
Other constraints
Made available with permission of California Department of Fish and Game/Northern Region/Environmental Resources Information Services (CDFG/NR/ERIS). This data is made available with the understanding that it shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means.
Constraints
Limitations of use
Please read the metadata document completely prior to use of this dataset. Examples of appropriate uses include: - steelhead recovery planning - Evaluation of future survey sites for steelhead - Validating steelhead distribution models Examples of inappropriate uses include: - Assuming absence of a point feature means that steelhead are not present in that stream. - Using this data to make parcel or ground level land use management decisions. - Using this dataset to prove or support non-existence of steelhead at any spatial scale. - Assuming that the point feature represents the maximum possible extent of steelhead range.

Spatial Reference

ArcGIS coordinate system
* Type Projected
* Geographic coordinate reference GCS_WGS_1984
* Projection WGS_1984_Web_Mercator_Auxiliary_Sphere
* Coordinate reference details
Projected coordinate system
Well-known identifier 102100
X origin -20037700
Y origin -30241100
XY scale 10000
Z origin -100000
Z scale 10000
M origin -1023.741847
M scale 10000
XY tolerance 0.001
Z tolerance 0.001
M tolerance 0.001
High precision true
Latest well-known identifier 3857
Well-known text PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]

Reference system identifier
* Value 3857
* Codespace EPSG
* Version 8.2.6


Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS0341_20110316
* Object type composite
* Object count 878



ArcGIS Feature Class Properties
Feature class name DS0341_20110316
* Feature type Simple
* Geometry type Polyline
* Has topology FALSE
* Feature count 878
* Spatial index TRUE
* Linear referencing TRUE



Data Quality

Scope of quality information
Resource level dataset




Data quality report - Conceptual consistency
Measure description
ASOD Observation data were used to develop a network of stream segments. These lines are developed by "tracing down" from each observation to the sea using the flow properties of USGS National Hydrography Dataset (NHD) High Resolution hydrography.




Data quality report - Completeness omission
Measure description
This dataset represents stream reaches that are known or believed to be used by steelhead. As explained above, this dataset displays stream reaches based on points where steelhead observations have been reported, hence it contains positive occurance only. However, steelhead may not be found on an annual basis on these reaches due to natural variations in run size, water conditions, and other environmental factors. The information in this data set should be used as an indicator of steelhead presence/suspected presence at the time of the observation; it does not necessarily verify that steelhead are currently present. Conversely, the absence of distribution on a stream does not necessarily indicate that steelhead do not utilize that stream. The line features in the dataset may not represent the maximum extent of steelhead on a stream; rather it is important to note that this most likely underestimates the actual distribution of steelhead. This distribution is based on observations found in the ASOD database. The individual observations may not have occurred at the upper extent of anadromous occupation. In addition, no attempt was made to capture every observation of O. mykiss and so it should not be assumed that this dataset is complete for each stream.




Data quality report - Quantitative attribute accuracy
Measure description
Attributes in this dataset are designed to be objective. When appropriate, automated processes have been used to calculate attribute values. No statistical or other manipulative analysis has been performed on any fields. It is impingent upon the data compiler to accurately represent the contributed data under the guidelines and constraints of the project methodologies. The distribution has undergone a review process. Some data were not reviewed and therefore the dataset varies in accuracy.




Data quality report - Absolute external positional accuracy
Dimension horizontal


Measure description
Features mapped to USGS National Hydrography Dataset High Resolution hydrography unless otherwise noted. Every attempt has been made to accurately represent observation based distribution on this hydrography. Details on processes used to achieve the best possible observation locations included in Aquatic Species Observation Database project documentation.




Lineage

Process step
When the process occurred 2011-02-01
Description
Edited metadata (added ISO keywords, modified title).


Process contact
Individual's name Will Patterson
Organization's name California Department of Fish and Game
Contact's role processor


Contact information




Geoprocessing history

Process
Date 2011-03-1601:11:54
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-07-2108:52:25
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2013-06-2114:49:39
Tool location c:\program files (x86)\arcgis\desktop10.1\ArcToolbox\Toolboxes\Data Management Tools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Distribution

Distributor
Contact information
Organization's name California Department of Fish and Game
Contact's role distributor


Contact information
Phone
Voice 530-225-2276

Address
e-mail address tchristy@dfg.ca.gov



Ordering process
Date of availability



Distribution format
* Name SDE Feature Class


Transfer options
Online source
Location http://bios.dfg.ca.gov/

Online source
Location ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/300_399/ds341.zip

Fields

Details for object DS0341_20110316
* Type Feature Class
* Row count 878
Definition
Steelhead Distribution for California
Definition source
ASOD


Field OBJECTID
* Alias OBJECTID
* Data type OID
* Width 4
* Precision 10
* Scale 0
* Field description
Internal feature number.
* Description source
ESRI
* Description of values
Sequential unique whole numbers that are automatically generated.




Field Shape
* Alias Shape
* Data type Geometry
* Width 4
* Precision 0
* Scale 0
Field description
Feature geometry.
Description source
ESRI
Description of values
Coordinates defining the features.




Field Early_Yr
* Alias Early_Yr
* Data type Integer
* Width 4
* Precision 10
* Scale 0
Field description
Earliest Year. The Observation Year for the earliest observation upstream from the current stream segment
Description source
ASOD


Field Late_Yr
* Alias Late_Yr
* Data type Integer
* Width 4
* Precision 10
* Scale 0
Field description
Latest Year. The Observation Year for the latest observation upstream from the current stream segment.


Field GNIS_ID
* Alias GNIS_ID
* Data type String
* Width 10
* Precision 0
* Scale 0
Field description
GNIS ID. Unique id for the stream given by the Geographic Names Information System. Used for Reference only.
Description source
GNIS


Field GNIS_Name
* Alias GNIS_Name
* Data type String
* Width 65
* Precision 0
* Scale 0
Field description
GNIS Name. Stream/River name as indicated by USGS Geographic Names Information System. Used for reference and query purposes.


Field Shape.STLength()
* Alias Shape.STLength()
* Data type Double
* Width 0
* Precision 0
* Scale 0






Metadata Details

Metadata language English(UNITED STATES)
Metadata character set utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata dataset
Scope name * dataset


* Last update 2014-11-06


ArcGIS metadata properties
Metadata format ArcGIS1.0
Metadata style FGDC CSDGM Metadata


Created in ArcGIS for the item 2014-03-0616:06:29
Last modified in ArcGIS for the item 2014-11-0613:40:58


Automatic updates
Have been performed Yes
Last update 2014-11-0613:40:58


Metadata Contacts

Metadata contact
Individual's name Connie Shannon
Organization's name Pacific States Marine Fisheries Commission
Contact's position Fisheries Data Management Specialist
Contact's role point of contact


Contact information
Phone
Voice 530-225-2155

Address
Type both
Delivery point CA Dept. of Fish and Game
Delivery point 2440 Athens Ave.
City Redding
Administrative area CA
Postal code 96001
e-mail address cshannon@dfg.ca.gov



Thumbnail and Enclosures

Enclosure
Enclosure type File
Description of enclosure original metadata
Original metadata document, which was translated yes
Source metadata format fgdc