SFPUC Wholesale Customer Water Demand Projections ... - BAWSCA

Base Year Average Use and Indoor Percentages by Billing Category for DSS Model 2
Single family
Multifamily
Commercial
Industrial
Landscape/Irrigation
Temporary Meter
Public Facility
Year Average, gpd/a Indoor Average, gpd/a Indoor Average, gpd/a Indoor Average, gpd/a Indoor Average, gpd/a Indoor Average, gpd/a Indoor Average, gpd/a Indoor Average, gpd/a Indoor Average, gpd/a Indoor Average, gpd/a Indoor
2001 390 61% 2100 77% 2500 66% 5300 78% 3680 7% 360 5% 8740 41%
Bimonthly data
Bimonthly data
Data for DSS Model - - Base Year 2001
Menlo Park Water Service Area 1
DSS Input Sheet
FINAL INPUT SHEET
Number of Water Use Water Use,
Total Dwelling Units in Census 2000 for City of Menlo Park
Category Accounts 2001 MGD Use Profile Water Use Indoor Water Use
FY. 2001 3 gpd/a 2 2001 Percent gcd gcd
Single family 3,366 390 1.31 34.35% 141 85
Multifamily 107 2,100 0.22 5.88% 79 60
Commercial 188 2,500 0.47 12.27%
Industrial 212 5,300 1.12 29.42%
Single family
2000 Units
No. Buildings
Landscape/Irrigation 111 3,680 0.41 10.67% 1-detached 2,261 2,261
Tempoary Meter 6 360 0.00 0.05% 1-attached 308 308
Reconcile agency account billing data and census data
Service Area Billing
Accounts - Year 2000
3
Difference between
billing and census
data
Public Facility 32 8,740 0.28 7.36% Subtotal 2,569 2,569 3,354 785
0 0 0.00 0.00% Multi family
Total 4,021 3.82 100.00% 2-units 95 48
Total Water Purchased (produced) 4 = 3.53 MGD 3-4 units 425 121
Unaccounted For Water (UFW) 5 = 1.8% Percent From 5 year BAWUA Survey average 5 to 9 units 381 54
Estimated UFW for DSS Model = 7% Percent 7% if actual is < 7%, otherwise = E25 10-19 units 291 19
Water Produced for use in DSS Model 4.09 MGD Add UFW to Total Water Use 20 or more units 440 9
Peaking Factor NA Provided by Agency or SFPUC Water Master Plan (or NA) mobile homes 2 0
Peaking Factor for DSS Model= 1.6 If NA use default value of 1.6. Subtotal 1,635 252 107 -145
MF Average = 6.49 units/building 15 units/account
- Blue cells are entered by modeler
- Yellow cells are input to DSS Model Total SF + MF units = 4,204
Housing Characteristics from U.S. Census Bureau
Meter for assumed 50 units per building
Meter for mobile home parks, assume 50 per park
Must be more than one building on an MF meter.
Data Sources / Notes
NOTES
1. - Communities served (includes all or portions of) Menlo Park (East) and unincorporated areas according to BAWUA survey
2 - Average gpd/a is based on a 12-month moving average through December 2001. Indoor use is based on average of 2 lowest consecutive months in the
winter if meters read bimonthly, or single lowest month if meters read monthly.
3 - Number of accounts is from data provided by water agency for this project (see worksheet with account data in this file)
Population and Household Size in Census 2000 for City of Menlo Park
Estimated
City of Menlo Park City of Menlo Park Service Area
Census Population Estimated Population Population
Data Sources / Notes
2000 2001 2001 Estimated growth from 2000 to 2001 (CA DOF Projections): 0.70%
Total Population from Census data 6 = 10,159 10230 Estimated employment growth from 2000 to 2001 (ABAG Employment Projections): 0.66%
Subtract Institutionalized Population = 206 208 Water use for the institutionalized population is accounted for in nonresidential billing categories
4 - Total water Purchased (produced) taken from BAWUA for Fiscal Year 2001-2002 or agency if provided. For Menlo Park the total amount of water
Residential Population = 9,953 10,022 Residential population shown corresponds to the city or cities represented by Census data
purchased in 2001 was provided by the agency and is shown in this file.
Avg. HHS 7 = 2.37
5 - Unaccounted for Water (UFW) is the percent difference between the total water purchased and the total water use.
MF Pop @ MF HHS 7 = 1.75 2,861 2,881 2,861 28.7% Percent of Population that is MF
SF Pop = 7,092 7,141 9,292 71.3% Percent of Population that is SF
6 - For reference see additional population estimates provided in population and employment estimates corresponding to service area table.
SF HHS 7 = 2.76
Total 12,153 100.0%
7 - Initial estimate based on census data for renter occupied units. For reference see table below that has 2000 census data for corresponding water service
1,853 Difference in our estimate and average of 2000-2001 and 2001-2002 BAWUA Surveys
area city or cities.
1,645 Difference in our estimate and the average 2000-2001 and 2001-2002 BAWUA Surveys including institutionalized population
2000 Census Data
Average household size (persons) 2.41 Estimate Service Area Dwelling Units for 2001
Average household size of owner-occupied unit (persons) 2.67 SF Res 3,366 Equals No. Buildings from cell M21 plus growth in accounts for one year from cell T38
Average household size of renter-occupied unit (persons) 2.07 MF Res 1,635 Equals billing accounts in 2001 from cell C16 times average units per account in cell N30 (or average units per building in cell L30 to minimize population difference in cell N47)
Homeowner vacancy rate (percent) 0.30
Rental vacancy rate (percent) 1.50 Population and Employment Estimates Corresponding to Service Area
Population
Employment
8 -(INSERT ADDITIONAL ASSUMPTIONS FOR THIS SERVICE AREA)
2000 Census data for jurisdiction 10,159 NA
2000 ABAG (jurisdictional) 10,159 9,851
2005 ABAG Projection (jurisdictional) 10,395 10,177
2000 ABAG (subregional) 11,634 9,950
2005 ABAG Projection (subregional) 11,913 10,276
2000 Department of Finance Benchmark 10,159 From State of California Department of Finance (DOF) table E-4 as of 4-1-2000. Website www.dof.ca.gov
Data Prepared : July 15, 2003 By: M. Maddaus 2001 Department of Finance Estimate 10,230 From State of California Department of Finance table E-4 as of 1-1-2001. Website www.dof.ca.gov
Revised: September 7, 2003 2002 Department of Finance Estimate 10,214 From State of California Department of Finance table E-4 as of 1-1-2002. Website www.dof.ca.gov
FY 2000-2001 BAWUA service area 10,300 NA
FY 2001-2002 BAWUA service area 10,300 NA
2001 Employment in Service Area (input to DSS Model) = 10,053 Service Area Employment is determined by the ratio of the 2000-2001 BAWUA service area population to the
2000 ABAG Subregional Population and escalated to 2001 using the assumed growth rate in cell T39. (EXPLAIN SOURCE)
Definitions / Abbreviations
ABAG Association of Bay Area Governments MF multi family
BAWUA Bay Area Water Users Association MGD million gallons per day
DSS Decision Support System Model No. number
du dwelling unit Pop population
FY Fiscal Year Res residential
gpd/a gallons per day / per account SF single family
gpd gallons per day UFW unaccounted for water
HHS
household size