LIBRARY : CA LAYER NAME : CALWATER22 COVERAGE NAME : CALW22A COVERAGE DESCRIPTION: The California Watershed Map (CALWATER version 2.2) is a set of standardized watershed boundaries meeting standardized delineation criteria. The hierarchy of watershed designations consists of six levels of increasing specificity: Hydrologic Region (HR), Hydrologic Unit (HU), Hydrologic Area (HA), Hydrologic Sub-Area (HSA), Super Planning Watershed (SPWS), and Planning Watershed (PWS). The primary purpose of Calwater is the assignment of a single, unique code to a specific watershed polygon. While there are 7022 polygons in the ARC/INFO coverage, there are actually fewer watershed codes. This is due to cases of multiple polygons bearing the same watershed code (Channel Islands, split polygons due to other boundary integration, e.g. ground water basins). Another confusing factor is that not all Hydrologic Units are subdivided into Hydrologic Areas, not all Hydrologic Areas are subdivided into Hydrologic Sub-Areas, and so on. Therefore, a nominal count of watershed codes in Calwater 2.2 is: Hydrologic Regions: 10 Hydrologic Units: 190 Hydrologic Areas: 522 Hydrologic Sub-Areas: 655 Super Planning Watersheds: 1623 Planning Watersheds: 6271 Primary purposes for Calwater 2.2 include but are not limited to mapping, reporting, and statistical analysis of water resources, water supply, water quality, wildlands, agriculture, soils, forests, rangelands, fish habitat, wildlife habitat, cross-referencing state and federal hydrologic unit or watershed codes and names. CALWATER version 2.2 is the third version of Calwater (after versions 1.2 and 2.0), and is a descendent of the 1:500,000-scale State Water Resources Control Board Basin Plan Maps drawn in the late 1970's. Version 1.2 was completed in 1995 by Tierra Data Systems (Jim Kellog). Linework was captured by overlaying the Basin Plan Maps on 1:24,000-scale USGS quad sheets, redrawing and digitizing lines to match 1:24,000-scale watershed boundaries, and subdividing the 4th level Hydrologic Subareas (HSAs) into 5th level Super Planning Watersheds (SPWS) and 6th level Planning Watersheds (PWS). Version 2.0 called for the removal of the 5th level Super Planning Watersheds and 6th level Planning Watersheds, introduction of the groundwater line around the Central and Salinas valleys, and was subject to an extensive cooperative planning and review effort by the Interagency California Watershed Mapping Committee (ICWMC), which includes the following agencies state and federal agencies with water resources, water quality, soils, forest, watershed, fish, and wildlife habitat responsibilities: California Department of Water Resources (DWR) California Department of Forestry and Fire Protection (CDF) California Department of Fish and Game (DFG) California State Water Resources Control Board (SWRCB) USDA Forest Service (USFS) Pacific Southwest Region (R5) USDA Natural Resources Conservation Service (NRCS) USDI Geologic Survey (USGS) USDI Bureau of Reclamation (USBR) USDI Bureau of Land Management (BLM) US Environmental Protection Agency (USEPA) Region IX Stephen P. Teale Data Center (Teale) These agencies plan to adopt a draft Memorandum of Understanding (MOU) titled "Regarding the Use and Maintenance of the California Watershed Map" (DWR 3/5/97) which has been prepared for the purpose of promoting the use, management, and maintenance of a common watershed map of California. In Calwater version 2.2 the Super Planning and Planning Watersheds were reinstated and verified to properly nest withing the watershed hierarchy. All Super Planning Watershed and any missing Planning Watershed names were populated, and where suitable, watershed boundaries were adjusted to linework provided by the following National Forests: Klamath Lassen Mendocino Shasta Trinity Six Rivers VITAL STATISTICS: Datum: NAD 27 Projection: UTM Units: Meters 1st Std. Parallel: 34 00 00 (34.0 degrees N) 2nd Std. Parallel: 40 30 00 (40.5 degrees N) Longitude of Origin: -120 00 00 (120.0 degrees W) Latitude of Origin: 00 00 00 (0.0 degrees) False Easting (X shift): 0 False Northing (Y shift): 0 Source: 1:24,000 USGS Quad Maps Source Media: Paper Source Projection: Polyconic Source Units: Meters Source Scale: 1:24,000 Capture Method: Original digitizing by J. Kellogg and staff (Tierra Data Systems) Conversion Software: ARC/Info rev 7.2.1 Data Structure: Vector ARC/INFO Coverage Type: Polygon, Line (Network) ARC/INFO Precision: Double ARC/INFO Tolerances: Fuzzy tolerance - 2 meters Dangle Length - .1 meters Number of Features: 7022 polygons Layer Size: 30.5 megabytes Data Updated: September 1999 DATA DICTIONARY: DATAFILE NAME: CALW22A.PAT COL ITEM NAME WIDTH OUTPUT TYPE N.DEC 1 AREA 8 18 F 5 9 PERIMETER 8 18 F 5 17 CALW22A# 4 5 B - 21 CALW22A-ID 4 5 B - 25 IDNUM 12 12 C - 37 HRC 2 2 C - 39 HBPA 2 2 C - 41 RBU 5 5 I - 46 RBUA 6 6 I - 52 RBUAS 7 7 I - 59 RBUASP 9 9 I - 68 RBUASPW 11 11 I - 79 HR 2 2 I - 81 RB 1 1 I - 82 HU 2 2 I - 84 HA 1 1 I - 85 HSA 1 1 I - 86 SPWS 2 2 I - 88 PWS 2 2 I - 90 HRNAME 35 35 C - 125 HUNAME 35 35 C - 160 HANAME 35 35 C - 195 HSANAME 35 35 C - 230 SPWSNAME 35 35 C - 265 PWSNAME 35 35 C - 300 ACRES 4 12 F 0 304 CU 8 8 I - 312 CUNAME 48 48 C - 360 CU2 8 8 I - 368 CU3 8 8 I - 376 IDNUM_20 12 12 C - 388 HUNAME_20 35 35 C - 423 HANAME_20 35 35 C - 458 HSANAME_20 35 35 C - IDNUM : ID NUMber of watershed (SWRCB/RWQCB) HRC : Hydrologic Region Code (DWR) HBPA : Hydrologic Basin Planning Area (SWRCB) RBU : Aggregate of HR,RB,HU RBUA : Aggregate of HR,RB,HU,HA RBUAS : Aggregate of HR,RB,HU,HA,HSA RBUASP : Aggregate of HR,RB,HU,HA,HSA,SPWS RBUAPSW : Aggregate of HR,RB,HU,HA,HSA,SPWS,PWS HR : Hydrologic Region (1->10) RB : Regional Water Qual. Cont. Board (1->9) HU : Hydrologic Unit (00->~80) HA : Hydrologic Area (0->9) HSA : Hydrologic Sub-Area (0->9) SPWS : Super Planning Watershed (00->~30) PWS : Planning Watershed (00->~15) HRNAME : Hydrologic Region Name HUNAME : Hydrologic Unit Name HANAME : Hydrologic Area Name HSANAME : Hydrologic Sub-Area Name SPWSNAME : Super Planning Watershed Name PWSNAME : Planning Watershed Name ACRES : Acreage of watershed polygon CU : Cataloging Unit (Fed. HUC), overlap #1 CUNAME : Cataloging Unit name, overlapping CU #1 CU2 : Cataloging Unit, overlapping CU #2 CU3 : Cataloging Unit, overlapping CU #3 IDNUM_20 : Calwater 2.0 IDNUM (DWR dissolver) HUNAME_20 : Calwater 2.0 HUNAME (DWR dissolver) HANAME_20 : Calwater 2.0 HANAME (DWR dissolver) HSANAME_20 : Calwater 2.0 HSANAME (DWR dissolver) DATAFILE NAME: CALW22A.AAT COL ITEM NAME WIDTH OUTPUT TYPE N.DEC 1 FNODE# 4 5 B - 5 TNODE# 4 5 B - 9 LPOLY# 4 5 B - 13 RPOLY# 4 5 B - 17 LENGTH 8 18 F 5 25 CALW22A# 4 5 B - 29 CALW22A-ID 4 5 B - 33 LEVEL 2 5 B - LEVEL : Highest level of difference between right and left side watersheds (e.g. 3 indicates different HA's) Lookup Table of California Hydrologic Region Names and Codes: Codes for Hydrologic Regions and other administrative entities are cross-referenced in the table below. Ten Hydrologic Regions are coded numerically by DWR, whereas there are nine Regional Water Quality Control Boards, with offices in twelve Hydrologic Basin Planning Areas (HBPA). DWR identifies three HRs in the Central Valley to SWRCB's one "Region", and SWRCB identifies three RWQCBs in DWR's one South Coast HR. The two-letter abbreviations SR and SB both refer to the Sacramento River basin. Other single-letter codes are used in DWR Bulletin 130-85 "Hydrologic Data 1985", and other DWR publications. It should also be noted that the boundary between Regional Water Quality Control Board regions 4 (Los Angeles) and 8 (Santa Ana) follows the boundary between Los Angeles and Orange or San Bernardino Counties, not the hydrologic boundary. The San Bernardino County line splits the Santa Ana River HU (4481 and 4801), and the Orange County line splits the San Gabriel River HU (4405 and 4845). Federal Hydrologic Unit Codes (4-digit HUC) Sub-Region codes and names are also provided. Note that some state designations map to more than one federal designation. More detailed HUC designations terminate with the 8-digit HUC, the Cataloging Unit (CU) (USGS 1986, Water Supply Paper 2294). Detailed, polygon-by-polygon lookup is also possible with the CU, CU2, CU3, etc. codes in the ARC/INFO Polygon Attribute Table above. KEY to Table HR: DWR Hydrologic Region (1->10) RB: Regional Water Quality Control Board (1->9) BC: DWR Basin Code (1-letter; Bulletin 130-85; Surface Water data) AC: DWR Areal Code (1-letter; Areal Designation Map; Climate, Grd.Water) HRC: DWR Hydrologic Region code (2-letter name abbreviation, var. pubs.) HBPA: SWRCB Hydrologic Basin Planning Area (2-letter name abbreviation) SUBR: USGS Hydrologic Unit Code (HUC) Sub-Region; incl. border states. --- HR RB BC AC HRC DWR HR Name HBPA SWRCB/RB Name SUBR -- -- -- -- --- ----------------- ---- ----------------- -------------- 1 1 F F NC North Coast NC North Coast 1801,1710 2 2 E E SF San Francisco Bay SF San Francisco Bay 1805 3 3 D T CC Central Coast CC Central Coast 1806 4 4 Z U SC South Coast LA Los Angeles 1807 5 5 A A SR Sacramento River SB Sacramento Basin 1802 6 5 B B SJ San Joaquin River SJ San Joaquin 1804 7 5 C C TL Tulare Lake TL Tulare Lake 1803 8 6 G G NL North Lahontan NL North Lahontan 1808,1604,1605 9 6 V W SL South Lahontan SL South Lahontan 1809,1606 10 7 W X CR Colorado River CR Colorado River 1810,1503 - 8 Y Y -- (not defined) SA Santa Ana 1807 - 9 X Z -- (not defined) SD San Diego 1807 HR SUBR Federal HUC Hydrologic Sub-Region Name (Remarks) -- ---- ------------------------------------------------------------- 1 1801 Klamath-Northern California Coastal (incl. upper Klamath, OR) 1 1710 Oregon-Washington Coastal (minor CA portion of OR drainages) 2 1805 San Francisco Bay 3 1806 Central California Coastal 4 1807 Southern California Coastal 5 1802 Sacramento 6 1804 San Joaquin 7 1803 Tulare-Buena Vista Lakes 8 1808 North Lahontan (incl. portions of NV basins draining into CA) 8 1604 Black Rock Desert-Humboldt (minor CA portion of NV basins) 8 1605 Central Lahontan (includes Tahoe basin and portions of NV) 8 1712 Oregon Closed Basins (minor CA portion near Goose Lake) 9 1809 Northern Mojave-Mono Lake (minor NV portions included) 9 1606 Central Nevada Desert Basins (minor CA portion) 10 1810 Southern Mojave-Salton Sea 10 1503 Lower Colorado (includes CA portion west of Colorado River) IDNUM TO HUC CROSSWALK Calwater maps fairly neatly to the federal Hydrologic Unit Codes (HUCS). Generally Calwater watersheds fit within HUCs, though there are some exceptions: The IDNUM to HUC cross-reference was developed with the following rules: For a given [state] Calwater watershed, overlapping [federal] Hydrologic Unit Codes (at the 8-digit Cataloging Unit [CU] level) are listed up to a maximum of 80% of the Calwater watershed OR three CUs, whichever comes first. For example: Where there is only one CU code listed for a given Calwater watershed code, that CU overlaps at least 80% of the Calwater watershed. Where there are two CU codes (CU and CU2) listed for a given Calwater code (only 18 watersheds fit this criterion), the largest CU alone overlaps less than 80% of the Calwater watershed, but combining CU2 then provides overlap of at least 80% of the Calwater watershed. Where there are three CU codes (CU, CU2, and CU3) listed for a given Calwater watershed (only 1 watershed fits this criterion), the largest 2 CUs together overlap less than 80% of the Calwater watershed; combining a third CU code produces additional overlap. Complete overlap statistics are left for calculation by the user. If a watershed consists of multiple polygons (because it is split by the groundwater line, the state boundary, or it is comprised of multiple islands), the total area of the watershed (the sum of all the polygons) is the value entered in the ACRES item. The individual polygons of a multi-polygon watershed all have the same watershed code. These cases are itemized below: LEGITIMATE DUPLICATE CODES (MULTIPLE POLYGONS FOR A SINGLE WATERSHED): Hydrologic Unit Level Count RBU Condition 2 1102 Oregon Border Split 3 3316 Channel Islands Split 8 4406 Channel Islands Split 2 4481 LA/Santa Ana Regional Split 2 4845 LA/Santa Ana Regional Split 2 6542 Ground Water Line Split Hydrologic Area Level Count RBU Condition 3 4406.1 Channel Islands Split 2 4406.3 Channel Islands Split 6 4845.1 LA/Santa Ana Regional Split 2 4845.6 LA/Santa Ana Regional Split 2 6542.4 Ground Water Line Split 2 9609.4 Nevada Border Split Hydrologic Subarea Level Count RBU Condition 3 4406.10 Channel Islands Split 2 4406.30 Channel Islands Split 2 4408.13 Point Mugu Lagoon - 2 parts 6 4845.15 LA/Santa Ana Regional Split 2 4845.62 LA/Santa Ana Regional Split 2 5514.25 Ground Water Line Split 3 5518.11 Lake Shasta Split 2 6537.21 Lake McClure Split 2 6542.41 Ground Water Line Split 2 9609.42 Nevada Border Split Super Planning Watershed Level Count RBU Condition 3 4406.1000 Channel Islands Split 2 4406.3000 Channel Islands Split 2 4408.1300 Point Mugu Lagoon - 2 parts 6 4845.1500 LA/Santa Ana Regional Split 2 4845.6200 LA/Santa Ana Regional Split 2 5506.2003 Lake Shasta Split 2 5506.2005 Lake Shasta Split 4 5506.2008 Lake Shasta Split 2 5514.2500 Ground Water Line Split 2 5522.2404 Stony Gorge Reservoir Split 2 9609.4200 Nevada Border Split Planning Watershed Level Count RBU Condition 3 3309.600404 Ground Water Line Split 2 3309.700901 Ground Water Line Split 3 4406.100000 Channel Islands Split 2 4406.300000 Channel Islands Split 2 4408.130000 Point Mugu Lagoon - 2 parts 6 4845.150000 LA/Santa Ana Regional Split 2 4845.620000 LA/Santa Ana Regional Split 2 9609.420000 Nevada Border Split DATA QUALITY ASSESSMENT: The following are subjective comments regarding this data: CALWATER boundaries were digitized on a 1:24,000-scale base and thus very accurately divide surface water features depicted on 1:100,000-scale Digital Line Graph hydrography. However, CALWATER delineations are primarily designed to be administrative reporting units, and the boundaries should not be used to define authoritative drainage area above a given point as a portion of their definition includes non-physical boundaries, particularly in valley floor and urbanized coastal regions. Attribute completeness is good. Compatibility with existing state and federal watershed delineations is good, except where explicitly different boundary configurations are applied. DATA CONTACT: Contact Name: Andy Richardson Contact's Phone: 916-263-3649 Date: September 1999 DOCUMENTATION DATES: January, 2002: Reprojected to UTM NAD27 (no shift), and clipped to KRIS Project study area. Contact Name: P. J. Trichilo Institute for Fisheries Resources (IFR) 791 Eighth Street Arcata, CA 95521 Contact's Phone: (707) 822-9428