PAWSD 2004 WCPlan

• Project Type: Water Conservation Plan
• Project Name: Pagosa Area Water & Sanitation District Water Conservation Plan
• Title: WATER CONSERVATION AND DROUGHT MANAGEMENT PLAN
• Date: 4/27/2004
• County: Archuleta
• Water Conservation - Doc Type: Complete Plan

Reservoirs:

To assure reliable water supplies, water is stored in reservoirs. P A WSD is comprised of five reservoirs or lakes:
Hatcher (880 acre feet usable capacity), Stevens (530 acre feet usable capacity), Pagosa (920 acre feet usable
capacity), and Forest (300 acre feet usable capacity). Usable capacity for the fifth reservoir, Village, is not
reflected primarily due to water quality issues, although in extreme conditions, this source could be utilized. In
addition the surrounding golf courses, condominiums, time shares, and a hotel utilize Village Lake for raw
water irrigation. Hatcher Reservoir receives its primary source of water from Four Mile Creek through the
Dutton Ditch Extension and through the Perkins Ditch. The Dutton Ditch diversion is capable of diverting
water to Hatcher Reservoir, Stevens Reservoir, or both. When Hatcher Reservoir is full, water is diverted to
Stevens Reservoir from the Dutton Ditch. When Stevens Reservoir is full it spills to Pagosa Lake through the
Linn and Clark Ditch. When Pagosa Lake is full it spills into Village Lake. From there it spills into Forest
Lake. Depending on various factors, including time of year and lake levels, P A WSD can and does pump raw
water from the San Juan River through the San Juan Pipeline to Village Lake, Forest Lake, or both. For water
received from the West Fork of the San Juan River, a smaller reservoir (approximately 14 acre feet usable
capacity) is located adjacent to the Snowball Water Treatment Plant.

2.2 Water/Wastewater Treatment Capacity

Water Treatment:

After water is collected, but before it can be used, it must first be treated at water treatment plants (WTP) to
make it safe to drink and to remove unpleasant odors or tastes. PA WSD has four WTP's that are operated as
needed. District One has three WTP's: Hatcher, Stevens, and the San Juan. As their names imply, the Hatcher
WTP (rated at 2 million gallons per day) treats water from Hatcher Reservoir, the Stevens WTP (rated at
500,000 gallons per day) treats water from Stevens Reservoir, and the San Juan WTP (rated at 3 million gallons
per day) treats water from the San Juan River. District Two gravity feeds from the West Fork of the San Juan
River to a reservoir adjacent to the Snowball WTP (rated at 2 million gallons per day). During 2003, the
District produced and treated approximately 1,653 acre-feet of water. It should be noted that this is a substantial
reduction compared to previous years, excluding the record drought year of 2002. This can largely be attributed
to a stronger awareness of water conservation methods and practices and repair ofleaks by District customers.

Treated Water Storage:

In District One, the Hatcher WTP pumps water to the Hatcher Storage Tank (rated at 500,000 gallon capacity).
The Stevens WTP supplies water to the Stevens Storage Tank (rated at 500,000 gallon capacity). Meadows
Storage Tank (rated at 1 millions gallon capacity) also provides treated storage. When the San Juan WTP is in
operation, it pumps water to the Stevens Storage Tank and Meadows Storage Tank. Two additional storage
tanks (rated with a total 182,000 gallon capacity) are also in place. In District Two, the Snowball WTP supplies
water to the Snowball Storage Tank (rated at 250,000 gallon capacity), the Cemetery Storage Tank (rated at 1
million gallon capacity), the Reservoir Hill Storage Tank (rated at 500,000 gallon capacity), the Putt Hill
Storage Tank (rated at 150,000 gallon capacity), and two additional tanks (rated at a total 90,000 gallon
capacity). When conditions warrant, District One facilities are capable of supplying water to District Two and
vice-versa.

Wastewater Treatment Capacitv:

After distribution system water (primarily from areas within District One) has been used, it is collected and
treated, and is then currently discharged to Martinez Creek. The P A WSD wastewater collection system is
comprised of21 sewer lift stations that pump to the main Vista Wastewater Treatment Plant. This treatment
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