Kerr Lake RWS

The Division of Water Resources (DWR) provides the data contained within this Local Water Supply Plan (LWSP) as a courtesy and service to our customers. DWR staff does not field verify data. Neither DWR, nor any other party involved in the preparation of this LWSP attests that the data is completely free of errors and omissions. Furthermore, data users are cautioned that LWSPs labeled PROVISIONAL have yet to be reviewed by DWR staff. Subsequent review may result in significant revision. Questions regarding the accuracy or limitations of usage of this data should be directed to the water system and/or DWR.

1. System Information

Contact Information

Complete

Water System Name: Kerr Lake RWS   PWSID: 02-91-999
Mailing Address:PO Box 1434
Henderson, NC 27536		Ownership:Municipality
 
Contact Person:Christy LipscombTitle:ORC
Phone:252-438-2141Cell/Mobile:
Distribution System
Line Type Size Range (Inches) Estimated % of lines
Asbestos Cement 24 14.00 %
Ductile Iron 16-30 79.00 %
Other 36 7.00 %
What are the estimated total miles of distribution system lines?   44 Miles
How many feet of distribution lines were replaced during 2002?   0 Feet
How many feet of new water mains were added during 2002?   27,810 Feet
How many meters were replaced in 2002?   0
How old are the oldest meters in this system?   25 Year(s)
How many meters for outdoor water use, such as irrigation, are not billed for sewer services?   0
What is this system's finished water storage capacity?   3.0000 Million Gallons
Has water pressure been inadequate in any part of the system since last update? Line breaks that were repaired quickly should not be included.   No

1) asbestos cement = 13.7%, other = 7.3%
2) Other is comprised of concrete lined cylinder pipe. Second mains to Oxford and Warren County have been added.

Programs
Does this system have a program to work or flush hydrants?   No, None
Does this system have a valve exercise program?   No, None
Does this system have a cross-connection program?   No
Does this system have a program to replace meters?   No
Does this system have a plumbing retrofit program?   No
Does this system have an active water conservation public education program?   No
Does this system have a leak detection program?   No
Water Conservation
What type of rate structure is used?   Other
How much reclaimed water does this system use?   0.0000 MGD   For how many connections?   0
Does this system have an interconnection with another system capable of providing water in an emergency?   No

2. Water Use Information

Service Area
Sub-Basin(s)% of Service Population
Roanoke River (14-1)0 %
Tar River (15-1)0 %
Fishing Creek (15-2)0 %
County(s)% of Service Population
Vance0 %
Granville0 %
Warren0 %
What was the year-round population served in 2002?   0
Has this system acquired another system since last report?   
Water Use by Type
Type of Use Metered
Connections		 Metered
Average Use (MGD)		 Non-Metered
Connections		 Non-Metered
Estimated Use (MGD)
Residential 0 0.0000 0 0.0000
Commercial 0 0.0000 0 0.0000
Industrial 0 0.0000 0 0.0000
Institutional 0 0.0000 0 0.0000

How much water was used for system processes (backwash, line cleaning, flushing, etc.)?   0.3060 MGD

1) Kerr Lake sells water only to Warren County, the City of Henderson and the City of Oxford. Residential & other types of water users are not reported here but instead in the LWSP for the individual Cities, Towns & County users. Otherwise the water user information would be counted twice in the overall basin analysis.

2) The amount raw water withdrawn has now been estimated to be 6.455 mgd [2-D (8). This is based on 5.776 mgd sold, 0.306 mgd of plant process water and 5.78% of unaccountable water. The 1997 percentage rate for unaccountable water has been used since accurate data is not available for 2002 due to a faulty raw water meter. The meter was repaired and calibrated in October 2004 and now appears to be reporting values that appear to be accurate. This implies that the raw water data from 2002, while not accurate was precise in that Kerr lake RWS bases its sales on the reported values.

3) The process water is the average amount that was actually discharged from the alum sludge facilities to Anderson Creek and includes backwashing and the sludge removal by way of the automated sludge removal system.

Water Sales
Purchaser PWSID Average
Daily Sold
(MGD)		 Days
Used		 Contract Required to
comply with water
use restrictions?		 Pipe Size(s)
(Inches)		 Use
Type
MGD Expiration Recurring
Henderson 02-91-010 3.4940 365 6.0000 2037 24,30 Regular
Oxford 02-39-010 1.3850 365 2.0000 2037 24 Regular
Warren Co 02-93-015 0.9090 365 2.0000 2037 20 Regular

Water sales are only to three (3) bulk users.

3. Water Supply Sources

Monthly Withdrawals & Purchases
Average Daily
Use (MGD)		 Max Day
Use (MGD)		 Average Daily
Use (MGD)		 Max Day
Use (MGD)		 Average Daily
Use (MGD)		 Max Day
Use (MGD)
Jan 5.9640 7.3370 May 6.8100 9.2430 Sep 6.6540 7.7590
Feb 6.0160 6.7050 Jun 7.6060 9.0890 Oct 6.0030 7.4500
Mar 5.8170 6.6650 Jul 6.6950 7.8470 Nov 5.8550 6.6360
Apr 6.3120 8.0470 Aug 7.1810 8.4800 Dec 6.5480 7.8580

The above submitted values are based on the estimated value for the total water used (average daily use=6.455 mgd). The daily values have been increased by 11%, which is the approximate percentage that the raw water meter was misreading.

Surface Water Sources
Stream Reservoir Average Daily Withdrawal Maximum Day
Withdrawal (MGD)		 Available Raw
Water Supply		 Usable On-Stream
Raw Water Supply
Storage (MG)
MGD Days Used MGD * Qualifier
Roanoke River Kerr Lake 6.4550 365 9.2430 10.0000 C 20.0000

* Qualifier: C=Contract Amount, SY20=20-year Safe Yield, SY50=50-year Safe Yield, F=20% of 7Q10 or other instream flow requirement, CUA=Capacity Use Area Permit

Surface Water Sources (continued)
Stream Reservoir Drainage Area
(sq mi)		 Metered? Sub-Basin County Year
Offline		 Use
Type
Roanoke River Kerr Lake 7,780 Yes Roanoke River (14-1) Vance Regular
What is this system's off-stream raw water supply storage capacity?   0 Million gallons
Are surface water sources monitored?   ,
Are you required to maintain minimum flows downstream of its intake or dam?   No
Does this system anticipate transferring surface water between river basins?   Yes

The above submitted values are based on the estimated value for the total water used (average daily use = 6.455 mgd). The daily values have been increased by 11%, which is the approximate percentage that the raw water meter was misreading.

Water Treatment Plants
Plant Name Permitted Capacity
(MGD)		 Is Raw Water Metered? Is Finished Water Ouput Metered? Source
Kerr Lake Regional WTP 13.9700 Yes Yes Kerr Lake
Did average daily water production exceed 80% of approved plant capacity for five consecutive days during 2002?  No
     If yes, was any water conservation implemented?  
Did average daily water production exceed 90% of approved plant capacity for five consecutive days during 2002?  No
     If yes, was any water conservation implemented?  
Are peak day demands expected to exceed the water treatment plant capacity in the next 10 years?  No

Design is underway to expand the plant capacity to 20 MGD.

4. Wastewater Information

Monthly Discharges
Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)		 Average Daily
Discharge (MGD)
Jan 0.0710 May 0.2890 Sep 0.2940
Feb 0.2750 Jun 0.4390 Oct 0.3210
Mar 0.3730 Jul 0.3810 Nov 0.2180
Apr 0.3450 Aug 0.3590 Dec 0.3130

How many sewer connections does this system have?   0
How many water service connections with septic systems does this system have?   0
Are there plans to build or expand wastewater treatment facilities in the next 10 years?   No

Discharge is supernatant from the alum sludge thickeners.

Wastewater Permits
Permit Number Type Permitted Capacity
(MGD)		 Design Capacity
(MGD)		 Average Annual
Daily Discharge
(MGD)		 Maximum Day Discharge
(MGD)		 Receiving Stream Receiving Basin
NC0083101 0.0000 0.0000 0.3060 1.3390 Anderson Swamp Creek Roanoke River (14-1)

1) This discharge is from the alum sludge thickeners. 2) Permitted and design capacity is unlimited.

5. Planning

Projections
  2002 2010 2020 2030
Year-Round Population 0 0 0 0
Seasonal Population 0 0 0 0
 
Residential 0.0000 0.0000 0.0000 0.0000
Commercial 0.0000 0.0000 0.0000 0.0000
Industrial 0.0000 0.0000 0.0000 0.0000
Institutional 0.0000 0.0000 0.0000 0.0000
System Process 0.3060 0.5290 0.8240 1.0880
Unaccounted-for 0.3610 0.3610 0.3610 0.3610

Kerr Lake RWS only has three (3) bulk users.1) The process water is the average amount that was actually discharged from the alum sludge facilities to Anderson Creek and includes backwashing and the sludge removal by way of the automated sludge removal system.
2) Projected average daily service area demand was updated after the faulty meter was located and recalibrated.
3) The unaccounted-for water was assumed to be 5.78% (1997 LWSP) since the faulty raw water meter made an accurate determination impossible.
4) Kerr Lake RWS is currently petitioning to obtain an Interbasin Transfer certification for additional withdrawal to supply its 3 bulk users' future demand.

Future Water Sales
Purchaser PWSID Contract Pipe Size(s) (Inches) Use Type
MGD Year Begin Year End
Oxford 02-39-010 2.0000 Regular

None expected.

Demand v/s Percent of Supply
  2002 2010 2020 2030
Surface Water Supply 10.0000 10.0000 10.0000 10.0000
Ground Water Supply 0.0000 0.0000 0.0000 0.0000
Purchases 0.0000 0.0000 0.0000 0.0000
Future Supplies 0.0000 0.0000 0.0000
Total Available Supply (MGD) 10.0000 10.0000 10.0000 10.0000
Service Area Demand 0.6670 0.8900 1.1850 1.4490
Sales 5.7880 10.0000 10.0000 10.0000
Future Sales 2.0000 2.0000 2.0000
Total Demand (MGD) 6.4550 12.8900 13.1850 13.4490
Demand as Percent of Supply 65% 129% 132% 134%

The purpose of the above chart is to show a general indication of how the long-term per capita water demand changes over time. The per capita water demand may actually be different than indicated due to seasonal populations and the accuracy of data submitted. Water systems that have calculated long-term per capita water demand based on a methodology that produces different results may submit their information in the notes field.

Your long-term water demand is unavailable until we receive population data for 2002 gallons per capita per day. What demand management practices do you plan to implement to reduce the per capita water demand (i.e. conduct regular water audits, implement a plumbing retrofit program, employ practices such as rainwater harvesting or reclaimed water)? If these practices are covered elsewhere in your plan, indicate where the practices are discussed here.    

Are there other demand management practices you will implement to reduce your future supply needs?   

What supplies other than the ones listed in future supplies are being considered to meet your future supply needs?   

How does the water system intend to implement the demand management and supply planning components above?   

1) Design is approximately 90% complete for an expansion of the water treatment plant capacity to 20.0 MGD. Construction is expected to begin by the end of 2003.
2) Kerr Lake RWS is currently petitioning to obtain an Interbasin Transfer certification for additional withdrawal to supply its 3 bulk users' future demand.

Additional Information

Has this system participated in regional water supply or water use planning?  Yes

What major water supply reports or studies were used for planning?  The Water Master Plan, Phase II, dated March 1999.

Please describe any other needs or issues regarding your water supply sources, any water system deficiencies or needed improvements (storage, treatment, etc.) or your ability to meet present and future water needs. Include both quantity and quality considerations, as well as financial, technical, managerial, permitting, and compliance issues:   1. New 10 and 15 MGD Raw Water Pumps with VFDs and Meter Vault. 2. A 24 inch parallel Raw Water Main. 3. Back-up Filter Backwash System. 4. New 15 MGD Finish Water Pump. 5. New stand-by Generator and Electrical Switchgear. 6. Clearwell roof Repairs. 7. New Chemical Feed and Storage Facilities. 8. New Flash Mix and Flocculation Equipment and Improvements.

The Division of Water Resources (DWR) provides the data contained within this Local Water Supply Plan (LWSP) as a courtesy and service to our customers. DWR staff does not field verify data. Neither DWR, nor any other party involved in the preparation of this LWSP attests that the data is completely free of errors and omissions. Furthermore, data users are cautioned that LWSPs labeled PROVISIONAL have yet to be reviewed by DWR staff. Subsequent review may result in significant revision. Questions regarding the accuracy or limitations of usage of this data should be directed to the water system and/or DWR.