The document summarizes the Northgate Water Master Plan Update for City Council. It notes that the previous 2010 plan underestimated development in the Northgate area. The 2013 update revises density projections and models water demands and system impacts. Hydraulic modeling shows the current system is sufficient with planned developments but more supply will be needed if growth continues rapidly. The recommendation is to construct a new 18-24" water line at an estimated $6.5 million to supply Northgate and the nearby Bio-Corridor as development progresses. Alternatives like new pumps or storage will be studied further in an FY14 master plan update.

1. Northgate Water Master
Plan Update
For City Council
May 9, 2013

2. Northgate District
Serves as the City‟s primary entertainment district
Represents the City‟s only current urban character area.
Subject of considerable development planning

3. 2010 Water Master Plan
Previous Water Master Plan
– Water Master Plan last approved by City Council in July 2010
– Predicted a modest growth rate in the Northgate area
– Showed water line upgrades needed in that local area
– Recent surge of dense development in Northgate necessitated a
closer look
2013 Northgate Area Water Master Plan Update
– Revised the map of expected density for the new paradigm
– How do the increased densities translate into additional water
demands?
– Will additional water system improvements be needed to meet
TCEQ requirements?

4. Northgate Area Map
• TAMU will serve
Water to the
Campus Pointe
area, in red.
• City will serve
water to ACC, in
yellow.
• This has been
included in all
conclusions.
• Overall density:
• 2010: 21 du/ac
• 2013: 46 du/ac
• Plaza: 65
• Rise: 120

5. Future Projections
Worked with Planning & Development Services to develop
a revised „Proposed Dwelling Unit Equivalents (PDUEs)‟
for Northgate
Derived Projected Peak-Hour Water Demands
• Note: Campus Pointe demands have been excluded in analysis.

6. TCEQ Requirements
TCEQ requires that system pressures do not drop below 35 psi at all
points in a distribution system during normal operating conditions
TCEQ requires that a system must be designed to maintain a minimum
pressure of 20 psi under combined fire and average maximum day
drinking water flow conditions

7. Hydraulic Modeling
City‟s computerized water distribution model:
– Is a “Static” model - captures a snapshot in time
– Answers wide variety of questions on pipe/pumps/system layout
– Need “Dynamic” model to simulate operating conditions and
predict system performance in a worst case scenario
Northgate Study - verified that the City‟s water model was
accurately matching up with the City‟s actual system
Conclusions from data collected in June 2012:
– Water system is OK with developments underway/planned
– More water supply to Northgate will be required if development
pace continues

8. Recommendation
Construct 18”-24” Water Line along 2818 & 60 to supply
Northgate and the Bio-Corridor
• Est cost: $6.5 million
• Planned timing:
• Design FY-17
• Land FY-18
• Construct FY-19
• May change with
Master Plan update
and Dynamic Model
in FY-14

9. Possible Alternatives
Will be studied in the FY-14 Water Master Plan Update:
• Add a dedicated pump station
• Add dedicated elevated storage
• Interconnect with TAMU or COB

10. Exact timing is difficult to predict
• Will work with Planning & Development services to
track growth trends and update projections in the
Northgate District
Timing of
Improvements
• Currently evaluating a
customized “per person”
water usage for the
Northgate District
• FY-14 Master Plan update
will study in-depth

11. Questions?