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Paj 1
Attachment
Attachment #1
#1
Utility
Utility Committee
Committee 04/25/2005
04/25/2005
Water System Master Plan
City of Dover Utility Committee
Presentation
April 25, 2005
Slide 1
Paj 2
Water System Master Plan
• System Mapping and Demands
• Update of Hydraulic Model
• Distribution System Summary
• Preliminary Capital Improvement Program –
Water Supply, Storage and Distribution
Slide 2
Paj 3
Water System Mapping
Complete Water System Update
by City
Map Book Development
Slide 3
Paj 4
Water System Demands
Hydraulic
Billing
GIS Modeling
Data
Software
• GIS software acts as a bridge to link textually
based data to spatially based software.
Slide 4
Paj 5
Water System Demand Distribution
BEFORE AFTER
Slide 5
Paj 6
Water System Demand Projections
• Planned/Projected
Growth
• Annexation
• Service Area
Expansion
• Bulk Customers
• Flat Industrial Growth
Slide 6
Paj 7
Water System Demand Projections
• 2005 Average Day Demand:
5.7 MGD
• 2025 Average Day Demand:
8.1 MGD
• Maximum Day Factor: 1.7
City of Dover Water Master Plan
• 2025 Maximum Day Demand: Projected Annual Average Day Demands
13.7 MGD 10.0
Avg. Day Demand w/Devel
9.0
8.1 MGD
8.0
Water Use (MG)
7.0
6.0
5.0
4.0
2005 2010 2015 2020 2025
Fiscal Year
Slide 7
Paj 8
Update of Hydraulic Model
• Software
– H2ONet (City-Owned,
GIS-Compatible)
• Model
– Re-create model
– Assign demand to
pipe nodes via City
billing record –
County tax map link
• Calibration
– Flow and pressure
testing
– Compare system
performance vs.
model
Slide 8
Paj 9
Distribution System Summary
Pipe Size – Water Model
Slide 9
Paj 10
Distribution System Summary
Pipe Size Pipe Diameter Pipe Length (miles) Percent
4" 11.34 6.44%
6" 42.29 24.01%
8" 59.09 33.55%
10" 24.81 14.08%
12" 32.41 18.40%
14" 2.45 1.39%
16" 3.67 2.08%
20" 0.07 0.04%
Total 176.13 100.00%
16" 20"
14" 4"
12"
6"
10"
8"
Slide 10
Paj 11
Distribution System Summary
Pipe Material
Pipe Material Pipe Length (miles) Percent
ACP 2.81 1.59%
CIP 92.97 52.78%
DIP 70.71 40.15%
HDPE 0.13 0.07%
PVC 9.52 5.40%
Total 176.13 100.00%
PVC
HDPE ACP
DIP
CIP
Slide 11
Paj 12
Distribution System Summary
Pipe Material – Cast Iron Pipe
Slide 12
Paj 13
Preliminary CIP - Water Supply
• Maximum Day Demand
• Permitted Daily Capacities: City of Dover Water Master Plan
Projected Maximum Day Demands
16.0
- Deep Well: 11.96 MGD 15.0
- WTP: 4.68 MGD 14.0
13.7 MGD
13.0
• Actual Production 12.0
Water Use (MG)
1 MGD
Capacity: 13.15 MGD 11.0
10.0
Safe Production Capacity
• Total Safe Production 9.0
8.0
Max. Day Demand w/Devel.
Capacity: 10.64 MGD 7.0
6.0
2005 2010 2015 2020 2025
Fiscal Year
Slide 13
Paj 14
Preliminary CIP - Water Storage
Storage Required
Capacity / Storage 5.00
Needs: 4.50
Equalization:
Equalization: 4.00
Million Gallons
-- 0.15
0.15 ** max
max day
day Current Storage
3.50
Fire
Fire Flow:
Flow:
-- 5,000
5,000 gpm
gpm for
for 44 hours
hours
3.00
Emergency:
Emergency: 2.50
Storage Required
-- 0.10
0.10 ** max
max day
day 2.00
2005 2010 2015 2020 2025
Year
Water Storage Requirement (Million Gallons)
Equaliz:
Avg. Day Max. Day 15% of Fire Flow: Emerg:
Demand Demand Max. 5,000 gpm 10% of Storage
Year w/Devel w/Devel. Day for 4 Hours Max. Day Required
2005 5.65 9.61 1.44 1.2 0.96 3.60
2010 6.65 11.31 1.70 1.2 1.13 4.03
2015 7.22 12.27 1.84 1.2 1.23 4.27
2020 7.84 13.32 2.00 1.2 1.33 4.53
2025 8.07 13.72 2.06 1.2 1.37 4.63
Slide 14
Paj 15
Preliminary CIP - Distribution
Slide 15
Paj 16
Preliminary Capital
Improvement Program
Distribution $19.7 M
Supply/Treatm ent $2.8 M
Storage $4.0 M
Total $26.2 M
$0.0 M $5.0 M $10.0 M $15.0 M $20.0 M $25.0 M $30.0 M
Cost ( in million dollars)
Slide 16