Seal Beach LogoCity of Seal Beach California
 Home  |  About Seal Beach  |  City Departments |  Community  |
 | Useful Links | City Telephone Directory | Search  
Public Works Home

Engineering / Developement Services

Capital Projects

Stormwater Drainage & Pollution Prevention

Streets, Sidewalks, Trees, Traffic and Transportation

Parks, Trees, and Landscape

Sewer

Water

Beach & Pier

Facilities

Fleet

FAQ





Hints for Recycling

Groundwater Replenishement System - www.gwrsystem.com
Orange County Water District - www.ocwd.com

Fast Facts

The Seal Beach Water Division of the Department of Public Works maintains  66 miles of pipeline, 3 active  groundwater wells, an active service connection with Metropolitan Water District, emergency interconnects, two reservoirs with a total storage capacity of 7 million gallons, 2 booster stations which constantly maintain water at approximately 60 PSI, 3 disinfection sites, approx. 600  hydrants and an equivalent of 8,000 service connections.

Its regular maintenance programs include:

  • Backlflow Prevention
  • Hydrant Flushing
  • Valve Exercise
  • Water Quality Sampling
  • Line Repair
  • Station Maintenance

 

Quick Water System Facts (excerpted from Water Master Plan Review, AKM and Water System Master Plan, Wildan):
Service Size
Population Served 26,000
# of acres served 7400 acres
Facilities
Miles of Water Pipe 66 miles
# of Booster Pump Stations 2
# of Reservoirs 2
Reservoir Storage Capacity 7.0 MG
# of active ground water wells 3
# of Disinfection Sites 3
Type of Disinfection On-Site Chlorine Generation
# of Public Fire Hydrants 590
# of Valves not yet available
Production
Source of Imported Water Metropolitan Water District 25%
99/00 Annual Water Produced and Purchased 4,180 AF
Useful Information
# of Pressure Zones 1
Average Pressure 50 -70 PSI

 



Water Equivalents Table

One acre-foot of water represents the need of two average families, in and around the home for one year.

1 cubic foot 7.48 Gallons 62.4 pounds of Water
1 acre-foot 43,560 cubic feet 325,900 gallons

 

An acre-foot covers 1 acre of land 1 foot deep.

 

1 cubic foot per second (cfs) 450 gallons per minute
1cfs 646,320 gallons per day
For 24 hours 1.983 acre-feet
For 30 days 59.5 acre-feet
For 1 year 724 acre-feet
1 million gallons 3.07 acre-feet
1 million gallons per day (mgd) 1,120 acre-feet per year
1,000 gallons per minute (gpm) 2.23 cfs
1,000 gpm 4.42 arce-feet per day

Water Engineering Data

Water Calculations

To find the capacity of a pipe or cylinder in gallons, multiply the square of the diameter in inches by the length in inches and by 0.0034.

To find the pressure in pounds per square inch of a column of water, multiply the height of the column in feet by 0.434.

Doubling the diameter of a pipe increases its capacity four times.

The gallons per minute which a pipe will deliver equals 0.0406 times the square of the diameter in inches, multiplied by the velocity of water in feet per minute.

The weight of water (in pounds) in any length pipe is obtained by multiplying the length in feet by the square of the diameter in inches, and by 0.34.

Conversion Table

To Convert

To

Multiply by

acre feet

gallons

325,851

acre feet

cubic feet

43,560

acre feet

cubic meters

1233.49

cubic feet

gallons

7.48

gallons

cubic feet

0.1337

gallons

pounds of water

8.345

gallons per minute

cubic feet per second

0.00223

cubic feet per second

gallons per minute

448.8

cubic feet per second

million gallons per day

0.6463

million gallons per day

cubic feet per second

1.547

million gallons per day

gallons per minute

694.44

gallons per minute

cubic feet per hour

8.0208

cubic feet

liters

28.32

liters

cubic feet

0.0353

gallons

liters

3.785

U.S. gallons

Imperial gallons

0.8326

Imperial gallons

U.S. gallons

1.201

gallons

cubic meters

0.00378

liters

gallons

0.2642

liters

cubic meters

0.001

cubic meters

liters

1000

cubic meters

cubic feet

35.31

cubic meters

gallons

264.2

feet of water

inches of Mercury

0.883

feet of water

pounds per square foot

62.43

feet of water

pounds per square inch

0.4335

cubic feet per minute

gallons per second

0.1247

cubic feet per minute

liters per second

0.472

 

Water Conservation - 

Water Costs Money....Over-watering Can  Increase Storm-Water Pollution ... Don't Waste it! (A dripping faucet or fixture can waste 3 gallons a day .... a total of 1,095 gallons per year.)

A continuous leak from a hole in the size mentioned, would over a three month period, waste the following amounts of water.
Diameter of Stream Gallons Cubic Feet Cubic Meters Cost
1/4" 1,181,500 158,000 4,475  
3/16" 666,000 89,031 2,521  
1/8" 296,000 39,400 1,115  
1/16" 74,000 9,850 280  
 

Please link to how to check for leaks.

10 Easy Ways To Save Water

  1. Put a layer of mulch around trees and plants. Chunks of bark, peat moss or gravel slow down evaporation.
  2. If you have a pool, use a pool cover to cut down on evaporation. It will also keep your pool cleaner and reduce the need to add chemicals.
  3. Set lawn mower blades one notch higher. Longer grass means less evaporation.
  4. Water your garden or lawn during the cool parts of the day. Early morning is better than dusk since it helps prevent the growth of fungus.
  5. Shorten your showers. Even a one- or two-minute reduction can save hundreds of gallons a month.
  6. Run only full loads in the washing machine and dishwasher.
  7. Regularly inspect for leaks. Fix dripping faucets and leaky toilets.
  8. Install a low-flow shower head or flow restrictor in your shower.
  9. Don't leave the hose running while washing your car. Instead, use a bucket of water and a quick hose rinse at the end.
  10. Use a broom to clean sidewalks, driveways or gutters, not a hose or sprinkle