Upper Los Pinos Water Quality Report

• Document ID: hr_0007
• Contract/PO #: PO 05-64
• County: La Plata
• County: Hinsdale
• County: San Juan
• Stream Name: Los Pinos River
• Basin: San Juan/Dolores
• Sub-Basin: Upper San Juan 14080101
• Water Division: 7
• Title: Water_Quality Data Synthesis for the Upper Los Pinos River Watershed, SW Colorado, and Suggestions for a Watershed Plan, 2005
• Date: 1/1/2005
• Prepared For: CWCB
• Prepared By: Southwest Hydro-Logic
• Watershed Pro - Doc Type: Planning Report

Table 2. Summary statistics for water properties and constituent concentrations in streams, high altitude lakes,
ground water, and Vallecito Reservoir in the upper Los Pinos River watershed--continued
Streams High Altitude Lakes Ground Water Vallecito Reservoir
Constituent Minimum Average Maximum Minimum Average Maximum Minimum Average Maximum Minimum Average Maximum
Nickel,
total as Ni,
ug/L 1 1 1 6 9 11 1 1 2
Nickel,
dissolved as Ni,
ug/L 1 2 5 -- -- -- -- -- -- 1 2 3
Selenium,
total as Se,
ug/L 1 2 2 -- -- -- 2 3 3 -- -- --
Selenium,
dissolved as Se,
ug/L 8 8 8 -- -- -- 1 1 1 -- -- --
Silver,
total as Ag,
ug/L 0 0 0 0 0 0 0
Silver,
dissolved as Ag,
ug/L 1 1 2 -- -- -- -- -- -- -- -- --
Silver, suspended
sediment, total
recoverable, ug/L -- -- -- -- -- -- -- -- --
Strontium,
total as Sr,
ug/L -- -- -- --
--
--
--
--
--
--
--
--
Strontium,
dissolved as Sr,
ug/L 12 30 220 -- -- -- -- -- -- -- -- --
Uranium,
dissolved,
ug/L 0 0 1 -- -- -- -- -- --
Vanadium,
dissolved as V,
ug/L 1 2 3 -- -- -- -- -- -- -- -- --
Zinc,
total recoverable
Zn,
ug/L 1 34 259 12 668 2700 5 8 10
Zinc,
dissolved as Zn,
ug/L 1 11 40 51 693 2300 1 2 4
Zinc, suspended
sediment, total
recoverable, ug/L 30 30 30 -- -- -- -- -- -- -- -- --
Carbon,
total as C,
mg/L 1.20 1.30 1.40 -- -- -- -- --
Carbon,
organic total
as C, mg/L 0.40 1.69 6.70 -- -- -- -- -- -- 6.20 6.70 7.20
Carbon,
organic dissolved
as C, mg/L 0.40 1.17 3.00 0.60 1.03 1.40 1.00 2.35 20.00
Ultraviolet
absorbance
254 nm,
units/cm 0.009 0.037 0.122 0.002 0.005 0.010 0.022 0.050 0.089
Ultraviolet
absorbance
280 nm,
units/cm 0.002 0.026 0.091 -- -- -- -- -- -- 0.019 0.034 0.057
Chlorophyll a,
ug/L -- -- -- -- -- -- -- -- -- 0.2 0.7 1.3
Chlorophyll b,
ug/L -- -- -- -- -- -- -- -- -- 0.3 0.3 0.3
Water-Quality Data Synthesis for the Upper Los Pinos River Watershed, In cooperation with the Colorado Watershed Protection Fund and
Southwestern Colorado, and Suggestions for a Watershed Plan, 2005 the San Juan Resource Conservation and Developrnent Council