Ch.3 Reservoir Management and Intake Structres

Methods of managing makes and reservoirs use for domestic water supply very widely depending on local situation
True
Each reservoir should have a water quality management program that is designed to meet the reservoir’s individual needs
True
Water treatment plant chlorination efficiency and coagulation are greatly increase at higher pH levels
False
The greater the difference in the water temperatures, the smaller difference in water density that creates the resistance mixing
False
In order to be feasible, water quality management programs must be prepared for each specific reservoir and be economically as well as technically justifiable
True
Once phosphate compounds have entered the soil, they tend to remain there unless taken up by the plants
True
Fertilization practices are best controlled through long-term public education programs
True
When applying copper sulfate to control algae, you will have to experiment to determine the best dosage for your situation
True
Why do nutrients cause water quality problems in domestic water supply reservoirs
Simulate growth of algae
What is it potential cause of objectionable taste and orders a domestic water supply
Algae blooms
At the result of algae blooms, what happens to organic matter within the water supply reservoirs
Increase
What is the purpose of vegetation removal in areas where you reservoirs are being formed
To reduce organic and nutrient loading the reservoir will receive as it feels
What is the primary purpose of any watershed management program
To control, minimize, or eliminate any practices that are harmful to water quality within the reservoir
What is (are) the critical element(s) for a watershed management program to be effective? Programs must be
Technically and economically friendly
What is the most notable micro pathogen associated with cattle feces
Cryptosporidium
Why are soils contain colloidal clay a concern when controlling soil grading
They can cause turbidity
Why are chemicals used to control both planktonic (Free-floating) and attached aquatic growths (periphyton) in the domestic water supply reservoirs? To prevent or control
Taste and odor problems resulting from algal blooms
What is the principle factor that reduces the effectiveness of copper sulfate as an algicide
Alkalinity
In reservoirs where algae are a potential problem, what is the purpose of a reservoir monitoring be performed? To provide information
Capable of anticipation a possible algal bloom
Whenever a chemical algae control program is started, when should monitoring be performed
Before, during, and after use of chemicals
What is a purpose of reservoir reaeration-destratification programs in domestic water supply reservoirs
To reduce winter fish kills in reservoir that freeze over during the winter
Why should the water level in a reservoir be lowered after the reservoir freezes over
To sag the ice cover and reduce ice pressures on structures
What is the use of records from a reservoir monitoring programs
To predict when water quality problems will occur or cease
What types of public use may be allowed on reservoirs
Boats without motor, fishing, swimming, water skiing
Which activities within a reservoir’s drainage area may lead to water quality deterioration within a reservoir
Agricultural runoff, discharge of treated wastewater, grazing of livestock, industrial discharges, and runoff from urban areas
Which water quality problems in domestic water supply reservoirs may be related to algal bloom
Dissolved oxygen depletion, Increased pH (which reduces chlorination efficiency) organic loading, shortened filter runs of complete treatment plants, and taste and odor problems
Why is there a concern regarding the increase in organic loading on a reservoir following periods of major runoff? Associated increase increase in
THM precursors
What are the purpose of reservoir management programs
Improvement and maintenance of fishery values, Improvement and maintenance of property values, Improvement and maintenance of recreational values, Improvement and maintenance of water quality, and Improvement and maintenance of water treatment costs
How can proper reservoir management techniques prevent or minimize fish kills
Reduction in clogging of fish gills with algae, Reduction in dissolved oxygen depletion in water beneath ice, Reduction in rapid oxygen depletion, Reduction in intensity and severity of algae bloom, Reduction in turbidity loading
What are the major types of problems caused by wastewater contamination of a domestic water contamination of domestic water supply reservoir
Microbial contamination and nutrient loading
What practices or activities within the watershed area may be harmful to water quality in domestic water supply reservoir
Farming practices, herbicides, highway storm water runoff, industrial discharges, and septic tank leaching
What are sources of pollutants in storm water runoff from highways
Accidents or spills, motoring public discarding trash and litter precipitation depositing pollutants on highways from great distances
Which factors influence the concentration of copper sulfate needed for effective control of any particular algae bloom
Alkalinity of the water, pH of the water, species of algae, suspended matter, water temperature
What information should be collected in order to the lightweight that effectiveness of copper sulfate treatment at dosage applied
Algicide residual concentration following treatment, amount of algae, causes of algae die offs, location of allergy and type of allergy
What water quality data should be collected when analyzing the effects of reaeration-destratification programs on algae and other environmental conditions
Nutrients, pH, suspended matter, and secchi this transparency
What time should be performed before draining a reservoir for me
Determine how you will discharge the water in the reservoir, determine when you will discharge water in the reservoir and determine where you will discharge to water in the reservoir
If I was algae bloom are a problem any particular reservoir, the operating agency should develop laboratory and personnel capabilities for obtaining what types of information
Extent of the algae bloom, intensity of the algae bloom, major species of algae involved in any given boom, taste and odor conditions related to algae bloom and water quality problems that developed as a result of them
Water intake facility should be constructed to prevent which type of items from entering the system
Algae scums, fish, logs and trash
The type of stream, trash rack, or log stop using he getting intake structure depends on which factors
Depth or depths at which intakes are located, frequency and intensity of algal scums and/or mass accumulations in a reservoir, location of the intake structure is relation to where debis accumulates in the reservoir, Quantity and type of debris encountered and size, depth of distribution, and number of fish
Which factors are the major causes of faulty operation of gates and valves in intakes facilities
Lack of lubrication, lack of use, settlement or shifting of support structure, which could cause binding of gates, vandalism and worn, corroded, loose or broken hearts