Jan Aries Montoya

BSCE 5-2

1. A ____ is an area (prototypically filled with water, also of variable size), localized in a basin, that is surrounded by land apart from any river or other outlet that serves to feed or drain. (lake)

2. lakes that do not have a natural outflow and lose water solely by evaporation or underground seepage or both. (Endorheic lakes)

3. uses of lakes

hydro-electric power generation

aesthetic purposes

recreational purposes

industrial use

agricultural use

domestic water supply

4. types of lakes

Oligotrophic

Mesotrophic

Eutrophic

Hypertrophic

Roque, Mark John D.

BSCE 5-2 201112602

1. Enumerate the different uses of Surface Water DOMESTIC IRRIGATION INDUSTRIAL THERMOELECTRIC POWER LIVESTOCK AQUACULTURE WATER USE MINING

2. Enumerate the different pollutants that enter the ocean MARITIME TRANSPORTATION SEWAGE AIR POLLUTANTS FARM RUNOFF LITTER OFFSHORE OIL INDUSTRIAL WASTEWATER

3. What is Surface Water?(defined as waters falling upon and naturally spreading over lands. They may

come from seasonal rains, melting snows, swamps or springs, or from all of them)

4. Explain why ocean is a storehouse of water(It is estimated that of the 332,500,000 cubic miles (mi3) of the world's water

supply, about 321,000,000 mi3 is stored in oceans. That is about 96.5 percent. It is also estimated that the oceans supply about 90 percent of the evaporated water that goes into the water cycle.)

5. What is Desalination?(Salt water is desalinated to produce fresh water suitable for human consumption or irrigation. One potential byproduct of desalination is salt.)

Rey G. Destacamento

BSCE 5-2

1. _____ is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases a river flows into the ground and becomes dry at the end of its course without reaching another body of water. (River)

2. Uses of river

source of water, for obtaining food, for transport as a defensive measure, as a source of hydropower to drive machinery, for bathing, as a means of disposing of waste The coarse sediments Recreational park

3. Importance of river Water Habitat Transport Farming Energy

4. Give at least 5 rivers found in the Philippines Agno river Pasig river Davao river Cagayan de oro river Chico river Agusan river Pampanga river

AUDITOR, REY C.

STREAM

I.1. It is a point of demarcation along the route of a stream or river, used for reference

marking or water monitoring. (Gauging Station)2. _________ is a stream which does not have any other recurring or perennial stream

feeding into it. (First Order Stream)3. It is a body of running water moving under the influence of gravity to lower levels in a

narrow clearly defined natural channel. (Stream)4. A shoal that develops in a stream as sediment is deposited as the current slows or is

impeded by wave action at the confluence. (Bar)5. It refers to the elevation of the water surface relative to an arbitrary fixed point. (Stage)6. It is defined as the rate of flow or the volume of water that passes through a channel

cross section in a specific period of time. (Discharge)7. _________ is an equation determined for a specific site that relates discharge to stage,

based on a linear regression of a series of concurrent measurements of stage and discharge. (Stage-discharge Relationship)

8. It is defined as the cross-sectional area divided by the wetted perimeter. (Hydraulic Radius)

9. _________ is characterized by sparse riparian vegetation and excessively eroding cut banks, which may slough into the active stream channel. (Bank Instability)

10. It is a direct measurement that simply measure the time required to fill a container of known volume. (Volumetric Measurement)

I.1. Purposes of flow measurement.

Problem assessment Watershed project planning Assessment of treatment needs Targeting source areas Design of management measures Project evaluation.

2. Characteristics of stream Ranking Gradient Profile Streamload