2025 Orange County Water Demand Projection Model
Table 2-8: NAICS Sector Jobs by Model Sector
CDR Sector
LODES NAICS sector
Retail
-
Retail Trade
- No exact LODES NAICS match for this CDR sector. The NAICS sector Educational Services was incorporated both into services and included as a separate explanatory variable to determine its relative importance to CII demand.
K-12 Public School
- -
Information
Real Estate and Rental and Leasing
- Professional, Scientific and Technical Services - Management of Companies and Enterprises - Administrative and Support and Waste Management and Remediation Services - Health Care and Social Assistance - Arts, Entertainment, and Recreation - Accommodation and Food Services - Educational Services
Service
- - - - - - - -
Agriculture, Forestry, Fishing and Hunting
Mining Utilities
Construction Manufacturing Wholesale Trade
Other
Transportation and Warehousing
Public Administration
The log of the percentage of each of these four sectors relative to total jobs was used as an explanatory variable to linearize the data and improve its suitability for modeling. For example, for the Retail sector in Equation 2-7 .
௦ ௧ ோ ௌ௩ ௦௦௧் ௧ ௦ ቁቇ
Equation 2-7
𝑅𝑒𝑡𝑎𝑖𝑙 = 𝑙𝑜𝑔 ቆ1 + ቀ100 ×
The CDR grouping Other was not included as an explanatory variable representing a reference point captured within the CII model intercept terms.
2.1.11
Housing Density
Housing density is negatively correlated with demand; on average, residences with more units per acre (or smaller parcel sizes) tend to use less water for outdoor uses. Housing density is calculated as the CDR provided housing units for each retail agency divided by the total single-family and multifamily parcel area, respectively. The total parcel area for each agency was determined based on processed GIS records from the Southern California Association of Governments (SCAG) and verified with ESRI’s Regrid Nationwide Parcel Boundaries for the United States. Table 2-9 shows the total parcel area for each agency.
2-14
Appendix G - 33
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