LIBRARY :
LAYER NAME : Coastal and Bay Shoreline GeoWaterbodies
COVERAGE NAME : g_cst.shp
LOCATION :
COVERAGE DESCRIPTION:
This coverage is a user created layer of coastline waterbodies. It is a
subset of Reach File 3. The shoreline features are created by the user selecting
appropriate shoreline reaches from the reach file as necessary for their assessment
cycle.
For the purpose of this coverage all but the items listed below where
removed from the original reach file 3 data set.
DATAFILE NAME: g_cst.dbf
COL ITEM NAME WIDTH TYPE DESCRIPTION (see details below)
1 TDCKEY 8 I Teale hydrography primary key
9 RF3RCHID 17 C ID of instant reach (RF3-alpha primary key)
26 PNAME 30 C Primary name of surface water feature
56 PNMCD 11 C Primary name code
67 RFORGFLAG 1 I Reach File origin flag (1,2,3)
68 UPDATE2 6 C Update date #2
74 UPDTCD2 8 C Update code #2
82 UPDTSRC2 8 C Update source #2
[DFG Note: all DFG updates are flagged
in item UPDTSRC2; details below]
89 FILLER 7 C Empty character field determining single and double line streams
114 WBID 25 C Waterbody identifier number
139 WBNAME 60 C User Created Waterbody Name
The hydrography layer consists of flowing waters (rivers and streams),
standing waters (lakes and ponds), and wetlands--both natural and manmade.
Two separate feature types are represented: polygons (areas) and lines.
Polygon features have attribute codes that identify water bodies such as
lakes, wide river segments, or swamps. Line features have attribute codes
that represent streams or shorelines.
The hydrography layer was assembled from data originally published by the
U.S. Geological Survey (USGS) in Digital Line Graph (DLG-3) format.
DLG-3 data were generated by USGS from 1:100,000-scale maps by manual
digitizing and raster scanning. Approximately 3200 original USGS DLG files
were processed by Teale to create the statewide hydrography data layer.
Edits to the original linework have been made during the data conversion by
Teale from the original DLG-3 format to the ARC/INFO(tm) GIS format. Such
changes include line movements (due to the map edge-matching process), minor
corrections of attribute coding, and the closing of open polygons. Flow
direction for streams (type line) has also been added. Stream lines are
flagged (where item FLOW = 1) to indicate whether or not the direction of
a given stream (line) has been defined and/or verified by Teale.
Hydrography of the entire state is stored in 33 separate ARC/INFO coverages
or tiles, whose individual boundaries correspond to the USGS 1:250,000-scale
quad series (see index coverage called hydroindexa and index diagram below).
Coverage names consist of two unique characters plus a suffix -JHYSA. Most
of the two-letter codes abbreviate a quad name, for example: RDJHYSA, for
the Redding quad. The tiles are also numbered from 1 to 33, northwest to
southeast, and this numeric code is contained in the item HYSNUM. A separate
item, HSCKEY, contains a number unique to each arc within a tile. HSCKEY and
HYSNUM are combined to form a primary key item, TDCKEY, which uniquely
identifies every hydrograhy arc record statewide.
In 1992, the Teale hydrography data layer was sent upon request to the U.S.
Environmental Protection Agency (US EPA) Office of Water for use as a basemap
for the River Reach File version 3-alpha, also known as Reach File 3 or
RF3-alpha. RF3 is US EPA's national hydrographic addressing system which
contains unique water feature identification codes, names, and update
documentation. RF3 was developed by Horizon Systems Corporation, under
contract to the US EPA Office of Water. RF3 as archived at Teale consists of
a separate data table for each of the 33 Teale hydrography coverages,
designated by the filename extension .DS3 (for example: RDJHYSA.DS3).
Hydrographic feature records in Teale's arc attribute tables (AAT) may be
related (linked or joined) with corresponding RF3 records in DS3 tables on
the item TDCKEY, which is present in both tables. Users are cautioned to
verify the integrity of AAT - DS3 relations, as instances of many DS3 records
relating to one AAT record are known to occur. Use of the relate item
RF3RCHID in older versions of Teale AATs has been discontinued.
Reach File data, documentation, and technical support are provided through
the USEPA Office of Water's STORET User Assistance Group at 800-424-9067.
STORET is the USEPA's national water quality information system.
-----
UPDATES
1996
The California Department of Fish and Game (DFG) assembled the most current
RF3 tables from copies downloaded directly from US EPA's National Computer
Center (NCC) in September 1996. These DS3 tables, organized by hydrologic
basins, were appended and Teale tile-based tables extracted from them.
A significant volume of water feature names/name codes and RF3
identifiers were input and corrected by DFG in cooperation with the
California Rivers Assessment (CARA) program at UC Davis. All such updates
are flagged in the item UPDTSRC2 in each DS3 table. See details in
DATA DICTIONARY below.
February 1997
DFG reported inconsistency in DLG MINOR1 coding in Amboy (100k quad name),
99% of arcs were coded as WASHES. Apparently locoalized in a single 100K
quad. Modification were made so the coding consistent with the adjactent
quads. The changes were made to 2 coverages: NEJHYSA and KIJHYSA.
VITAL STATISTICS:
Datum: NAD 27
Projection: Albers (Teale)
Units: Meters
1st Std. Parallel: 34 00 00
2nd Std. Parallel: 40 30 00
Longitude of Origin: -120 00 00
Latitude of Origin: 00 00 00
False Easting (X shift): 0
False Northing (Y shift): -4,000,000
Source: USGS DLG-3 (optional format)
Source Media: Magnetic tape (80 byte records)
Source Projection: Universal Transverse Mercator
UTM Zones 10 & 11
Source Units: Meters
Source Scale: 1:100,000
Capture Method: Scanned, digitized
Conversion Software: ARC/Info rev 5.0.1
Data Structure: Vector
ARC/INFO Coverage Type: NET (Line, polygon)
ARC/INFO Precision: Double
ARC/INFO Tolerances: 0 to 200 meters
Number of Features: 16,077
Layer Size: 116.970 MB
Data Updated: September 1993 (added RF3 line feature table)
(other unscheduled updates have been made,
see original log file in Teale workspace)
DATA DICTIONARY:
ARC ATTRIBUTE TABLE (AAT)
DATAFILE NAME: JHYSA.AAT where xx = tile code (see index)
LINE attribute fields (USGS DLG Hydrography line elements):
COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC
-------------------------------------------------------------
33 MAJOR1 4 6 B - described below
37 MINOR1 4 6 B -
41 MAJOR2 4 6 B -
45 MINOR2 4 6 B -
49 MAJOR3 4 6 B -
53 MINOR3 4 6 B -
57 MAJOR4 4 6 B -
61 MINOR4 4 6 B -
65 MAJOR5 4 6 B -
69 MINOR5 4 6 B -
73 FLOW 1 1 I -
74 TDCKEY 8 8 I - primary key
82 DCU 8 8 I DFG-inserted CU
** REDEFINED ITEMS **
74 HSCKEY 6 6 I - described below
80 HYSNUM 2 2 I - described below
NOTE: Items common to all LINE coverages: FNODE#,
TNODE#, LPOLY#, RPOLY#, LENGTH, JHYSA# and
JHYSA-ID are not described here; with one exception:
Where JHYSA-ID is negative (-ID < 0), arc is an
artificial neat line (coverage or tile boundary).
FLOW: If equal to 1, flow direction is defined; if equal
to 0, no direction is defined.
TDCKEY: Concatenates HSCKEY + HYSNUM to form a primary key for
all hydro features statewide; links hydrography features
in .AAT to US EPA River Reach File (RF3) records in DS3.
DCU: Item inserted by DFG into Teale AAT; was derived from DFG-refined
Cataloging Unit (CU) boundaries for use with USGS 1:100K hydrography.
Coverage in development "hucdfg1d" was used to resolve cases where more
than one RF3RCHID related to a single Teale feature. Unresolved
CU boundaries still exist in vicinity of Central Valley and Delta.
Expect minor changes to DCU as CU boundaries are refined and
standardized.
HSCKEY: Unique number for each hydrographic feature within a single
tile. Ranges from 1 to over 20,000 in some tiles. Item was
created for RF3 use. Concatenated with HYSNUM to create TDCKEY.
HYSNUM: Hydrography tile sequence number, ranges from 1 to 33.
Item was created for RF3 use.
Concatenated to HSCKEY to produce TDCKEY.
MAJOR1-5: Major codes denote hydrography (code 50) as the major
feature category to which a line element belongs (as
opposed to property boundaries, roads, etc within DLGs).
MINOR1-5: Minor codes assign up to five descriptive subcategories
to any single hydrography line element.
Major Minor
Code # Code # Element Description
------ ------ -------------------
50 200 Shoreline
50 201 Man-made shoreline
50 202 Closure line
50 203 Indefinite shoreline
50 204 Apparent Limit
50 205 Outline of a Carolina bay
50 206 Danger curve
50 400 Rapids
50 401 Falls
50 402 Gravel pit/quarry filled w/water
50 403 Gaging station
50 404 Pumping station
50 405 Water intake
50 406 Dam or weir
50 407 Canal lock or sluice gate
50 408 Spillway
50 409 Gate(flood,tidal,head,check)
50 410 Rock
50 411 Crevasse
50 412 Stream
50 413 Braided stream
50 414 Ditch or canal
50 415 Aqueduct
50 416 Flume
50 417 Penstock
50 418 Siphon
50 419 Channel in water area
50 420 Wash or ephemeral drain
50 421 Lake or pond
50 422 Coral reef
50 423 Sand in open water
50 424 Spoil area
50 425 Fish ladders
50 601 Underground
50 602 Overpassing
50 603 Elevated
50 604 Tunnel
50 605 Right bank
50 606 Left bank
50 607 Under construction
50 608 Salt
50 609 Unsurveyed
50 610 Intermittent
50 611 Abandoned or discontinued
50 612 Submerged or sunken
50 613 Wooded
50 614 Dry
50 615 Mineral or hot (sulphur,alkali,etc.)
50 616 Navigable transportation
50 617 Underpassing
50 618 Earthen construction
50 000 Photorevised feature
05N --- Water surface elevation, actual or
interpolated.
N = elevation units
1=feet
2=meters
6=feet below datum
7=meters below datum
053 --- Angle of clockwise rotation (nearest
whole degree)
055 --- River mile, value in four spaces, right
justified
058 000 Best estimate of classification or
position
059 0-- Coincident feature
----
RELATED TABLE
The US EPA River Reach File version 3 (RF3-alpha) DS3 table structure
is presented below. One DS3 table exists for each of the 33 ARC/INFO
hydrography coverages. Each DS3 table is related to its respective
hydrography coverage arc attribute table (AAT) on the item TDCKEY.
The file is sorted by TDCKEY in sequenctial ordered.
Reach File Reference Information and DS3 attribute Descriptions:
(http://www.epa.gov/OWOW/NPS/rf)
US EPA River Reach File, version 3-alpha (RF3-alpha) attributes:
DATAFILE NAME: JHYSA.DS2 Where xx = tile code (see index)
COL ITEM NAME WIDTH TYPE DESCRIPTION (see details below)
1 TDCKEY 8 I Teale hydrography primary key
9 CU 8 I Cataloging Unit (aka HUC); 149 total in CA
17 SEG 4 I Segment, unique within a CU
21 MI 5 C Marker Index, unique within a SEG
26 UPMI 5 C Upstream Marker Index
31 RFLAG 1 C Routing flag (0,1)
32 OWFLAG 1 C Open Water reach flag (0,1)
33 TFLAG 1 C Terminal reach flag (0,1)
34 SFLAG 1 C Start reach flag (0,1)
35 REACHTYPE 1 C Type of Reach (A to Z)
36 LEVEL 2 I Stream level code
38 JUNC 2 I Level of downstream reach
40 DIVERGENCE 1 I Divergent junction type code
41 USDIR 1 C Direction of flow of upstream reach
42 TERMID 5 I Terminal stream ID
47 TRMBLV 1 I Terminal base level code
48 PNAME 30 C Primary name of surface water feature
78 PNMCD 11 C Primary name code
89 CNAME 30 C Compliment name
119 CNMCD 11 C Compliment name code
130 OWNAME 30 C Open water name
160 OWNMCD 11 C Open water name code
171 DSCU 8 I Downstream CU
179 DSSEG 4 I Downstream SEG
183 DSMI 5 C Downstream MI
188 CCU 8 I Compliment CU
196 CSEG 4 I Compliment SEG
200 CMI 5 C Compliment MI
205 CDIR 1 C Compliment direction, looking upstream
206 ULCU 8 I Upstream, left CU
214 ULSEG 4 I Upstream, left SEG
218 ULMI 5 C Upstream, left MI
223 URCU 8 I Upstream, right CU
231 URSEG 4 I Upstream, right SEG
235 URMI 5 C Upstream, right MI
240 SEGL 6 N Length of reach (miles and hundredths)
246 RFORGFLAG 1 I Reach File origin flag (1,2,3)
247 ALTPNMCD 8 I Alternate primary name code
255 ALTOWNMC 8 I Alternate open water name code
263 DLAT 8 N Downstream latitude (decimal degrees)
271 DLONG 8 N Downstream longitude
279 ULAT 8 N Upstream latitude
287 ULONG 8 N Upstream longitude
295 MINLAT 8 N Minimum latitude
303 MINLONG 8 N Minumum longitude
311 MAXLAT 8 N Maximum latitude
319 MAXLONG 8 N Maximum longitude
327 NDLGREC 4 I Number of DLG records
331 LN1AT2 4 I DLG line attribute
335 LN2AT2 4 I DLG line attribute
339 AR1AT2 4 I DLG area attribute
343 AR1AT4 4 I DLG area attribute
347 AR2AT2 4 I DLG area attribute
351 AR2AT4 4 I DLG area attribute
355 UPDATE1 6 C Update date #1
361 UPDTCD1 8 C Update code #1
369 UPDTSRC1 8 C Update source #1
377 UPDATE2 6 C Update date #2
383 UPDTCD2 8 C Update code #2
391 UPDTSRC2 8 C Update source #2
[DFG Note: all DFG updates are flagged
in item UPDTSRC2; details below]
399 UPDATE3 6 C Update date #3
405 UPDTCD3 8 C Update code #3
413 UPDTSRC3 8 C Update source #3
421 DIVCU 8 I Divergent CU
429 DIVSEG 4 I Divergent SEG
433 DIVMI 5 C Divergent MI
438 DLGID 6 I DLG number (special use)
444 FILLER 7 C Empty character field (future use)
** REDEFINED ITEMS **
9 RF3RCHID 17 C ID of instant reach (RF3-alpha primary key)
171 DSRF3RCHID 17 C ID of reach downstream of instant reach
188 CURF3RCHID 17 C ID of reach compliment to instant reach
206 ULRF3RCHID 17 C ID of reach upstream left of instant reach
223 URRF3RCHID 17 C ID of reach upstream right of instant reach
421 DIVRF3RCHID 17 C ID of reach divergent from instant reach
-----
POLYGON ATTRIBUTE TABLE (PAT)
DATAFILE NAME: JHYSA.PAT
RECORD LENGTH: 56
POLYGON attribute fields (USGS DLG Hydrography Area Elements):
COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC
25 MAJOR1 4 6 B -
29 MINOR1 4 6 B -
33 MAJOR2 4 6 B -
37 MINOR2 4 6 B -
41 MAJOR3 4 6 B -
45 MINOR3 4 6 B -
49 MAJOR4 4 6 B -
53 MINOR4 4 6 B -
NOTE: Items common to all POLYGON coverages: AREA,
PERIMETER, JHYSA# and JHYSA-ID are not
described here.
MAJOR1-4: Major codes denote hydrography (code 50) as the major
feature category to which an area element belongs.
MINOR1-4: Minor codes assign up to four descriptive subcategories
to any single hydrography area element.
Major Minor
Code # Code # Element Description
------ ------- -------------------
50 100 Alkali flat
50 101 Reservoir
50 102 Covered reservoir
50 103 Glacier or permanent snowfield
50 104 Salt evaporator
50 105 Inundation area
50 106 Fish hatchery or farm
50 107 Industrial water impoundment
50 108 Area to be submerged
50 109 Sewage disposal pond/filtration bed
50 110 Tailings pond
50 111 Marsh, wetland,swamp,bog
50 112 Mangrove area
50 113 Rice Field
50 114 Cranberry bog
50 115 Flats(tidal,mud,sand,gravel)
50 116 Bays,estuaries,gulfs,oceans,seas
50 117 Shoal
50 118 Soda evaporator
50 119 Duck pond
50 400 Rapids
50 401 Falls
50 402 Gravel pit/quarry filled w/water
50 403 Gaging station
50 404 Pumping station
50 405 Water intake
50 406 Dam or weir
50 407 Canal lock or sluice gate
50 408 Spillway
50 409 Gate(flood,tidal,head,check)
50 410 Rock
50 411 Crevasse
50 412 Stream
50 413 Braided stream
50 414 Ditch or canal
50 415 Aqueduct
50 416 Flume
50 417 Penstock
50 418 Siphon
50 419 Channel in water area
50 420 Wash or ephemeral drain
50 421 Lake or pond
50 422 Coral reef
50 423 Sand in open water
50 424 Spoil area
50 425 Fish ladders
50 601 Underground
50 602 Overpassing
50 603 Elevated
50 604 Tunnel
50 605 Right bank
50 606 Left bank
50 607 Under construction
50 608 Salt
50 609 Unsurveyed
50 610 Intermittent
50 611 Abandoned or discontinued
50 612 Submerged or sunken
50 613 Wooded
50 614 Dry
50 615 Mineral or hot (sulphur, alkali,etc.)
50 616 Navigable transportation
50 617 Underpassing
50 618 Earthen construction
50 000 Photorevised feature
-----
DATA QUALITY ASSESSMENT:
The following are subjective comments regarding this data.
The USGS DLG features of this layer are fairly complete. The density of
line work representing drainage networks appears to vary arbitrarily from
quad to quad, and there are discontinuities in lines depicting streams at
the edges of 100k quads. The geographic feature accuracy is fair.
Contiguous features are not always matched across map sheet boundaries.
The attribute completeness and accuracy of MAJOR/MINOR code pairs is good.
The US EPA River Reach File version 3-alpha (RF3-alpha) as archived at
Teale is an alpha release (prototype). As such, users are cautioned to
verify drainage network connectivity and water feature names before
undertaking extensive processing using RF3 data.
County lines (a separate Teale data layer) and hydrography lines are not
reconciled with each other and discrepancies between the two will occur
when a county boundary follows a water feature.
-----
SUPPLEMENTARY INFORMATION (courtesy of Calif. Department of Fish and Game)
In 1993, US EPA changed the Reach File table DS2 to DS3 and changed the
MILE and related items from numeric type to character type. No data content
changes were made. DFG compiled over 150 US EPA National Computer Center
(NCC) CU-based DS3 tables into a set of 33 Teale tile-based tables in
October 1996. DFG and cooperators have also made extensive corrections
and additions of primary names/name codes in the DS3 tables. Forwarding
of these updates is expected in October 1996 to US EPA for inclusion in
RF3-final processing.
The DS3 item UPDTSRC1 concatenates HYSNUM and HSCKEY (in that order) for
those records that have a corresponding AAT record. UPDTSRC1 contains the
value 9999 for DS3 records created by US EPA that have no corresponding
record in the hydrography layer. UPDTSRC1 contains leading zeroes for
single-digit HYSNUM values. The Teale primary key, TDCKEY, is similar to
UPDTSRC1 except that the concatenation order is HSCKEY + HYSNUM.
-----
INDEX TO 1:100,000 DLG HYDROGRAPHY
ARC/INFO coverage names are composed of the prefixes shown in the statewide
grid below (some are abbreviations of the USGS 1:250,000-scale quad map
series names), plus the suffix JHYSA for the line and polygon data layers
(for example, RDJHYSA, for the Redding quad).
The item HYSNUM in the ARC/INFO feature attribute tables contains the
indicated numeric values to reference the tile within which a given
feature falls.
HYSNUM QUAD NAME
126 124 122 120W
42N _____ OREGON _____ 1 CRESCENT CITY
| ZF | WE | AC | 2 WEED
| 1 | 2 | 3 | N 3 ALTURAS
41 |_____|_____|_____| E 4 EUREKA
| EA | RD | XJ | V 5 REDDING
| 4 | 5 | 6 | A 6 SUSANVILLE
40 |_____|_____|_____| D 7 UKIAH
| UK | CQ | A 8 CHICO
| 7 | 8 | 118 9 SANTA ROSA
39 |_____|_____|_____ 10 SACRAMENTO
| X9 | SO | WK | 11 WALKER LAKE
| 9 | 10 | 11 | 116 12 SAN FRANCISCO
38 |_____|_____|_____|_____ 13 SAN JOSE
| SF | SJ | MZ | GU | 14 MARIPOSA
| 12 | 13 | 14 | 15 | 15 GOLDFIELD
37 |_____|_____|_____|_____| 16 (no USGS name)
| SX | ZP | FO | DV | 17 MONTEREY
| 16 | 17 | 18 | 19 | 114 18 FRESNO
36 |_____|_____|_____|_____|_____ 19 DEATH VALLEY
| SL | BF | TJ | KI | 20 SAN LUIS OBISPO
| 20 | 21 | 22 | 23 | 21 BAKERSFIELD
35 |_____|_____|_____|_____| A 22 TRONA
| SM | LA | SB | NE | R 23 KINGMAN
| 24 | 25 | 26 | 27 | I 24 SANTA MARIA
34 |_____|_____|_____|_____| Z 25 LOS ANGELES
| SV | LB | SN | S6 | O 26 SAN BERNARDINO
| 28 | 29 | 30 | 31 | N 27 NEEDLES
33 |_____|_____|_____|_____| A 28 SANTA ROSA ISLAND
| SD | EL | 29 LONG BEACH
| 32 | 33 | 30 SANTA ANA
32 |--------------| 31 SALTON SEA
MEXICO 32 SAN DIEGO
33 EL CENTRO
Each quad covers an area one degree of latitude by two degrees of longitude,
except as noted: ZF, WE, AC, XJ, DV and CQ coverage boundaries have been extended
to include hydrographic features between the quad lines and the State Boundary;
SD and SV include Channel Islands; no Teale data beyond the Mexico border (---).
See the coverage hydroindexa in /callib/hydro for an ARC/INFO version of the
above index diagram.
-----
DATA CONTACTS:
Contact Name: Karen Beardsley (Information Center for the Environment)
Contact's Phone: (530) 752-0532
metadate: 4/27/98