I have posted this question in two parts. Can someone please answer it for me. T

Question

I have posted this question in two parts. Can someone please answer it for me.

Thanks.

Floods application.

Part E - The effect of roads on flooding

Highways are indicated by bold red lines on the map. How can Highway 857 potentially affect flooding in Hickory Estates?

Choose from (1, 2, 3, 4)

1. Because of the impermeable road surface, both Route 857 and Route 342 would cause floodwaters to be potentially trapped in Hickory Estates, causing flooding.

2. The road would have no effect; flooding is not affected by urbanization.

3. The road could block floodwaters and cause the river to flow south.

4. The bridge across the river could block water flow, causing higher water levels and increasing the potential for flooding.

Part F - Stream gradient

Stream gradient is calculated as the change in elevation (measured in feet) divided by the distance traveled (in miles). Using the base flood elevation lines on the map, what is the stream gradient of the main trunk of Clearwater River shown on the map? Recall that 5280 feet = 1 mile.

Choose from (1, 2, 3, 4)

1. approximately .5 feet/mile

2. approximately 3 feet/mile

3. approximately 15 feet/mile

4. approximately 10 feet/mile

Part G - Flooding risk

Which community has the least risk of flooding?

Choose from (1, 2, 3, 4)

1. Riverside

2. Downtown

3. Walnut Heights

4. Ralston

Part H - 100-year flood risk

According to the map, how many total buildings in Hazard City are at a high risk for flooding during a 100-year storm event? Note that buildings are marked as black and red squares on the map.

Choose from (1, 2, 3, 4)

1. more than 20

2. 0

3. 3

4. 13

Part I - Damming rivers and future floods

If the Palouse River is dammed upstream, how might this affect future flooding in Ralston?

Choose from (1, 2, 3, 4)

1. It would have no effect.

2. It could lower Clearwater River, decreasing the amount of water in its tributary, but this would have no effect on Ralston.

3. It would raise Clearwater River, increasing the amount of water in its tributary, and increase the risk in Ralston.

4. It could lower Clearwater River, decreasing the amount of water in its tributary, and decrease the risk in Ralston.

Part J - Past flooding events and current flood levels

Paleoflood (ancient flood) deposits have been found in parts of Ralston that are currently in Zone C. Which of these answers provides a possible explanation for this finding?

Select all that apply.

1. The river system experienced a flood greater than the 500-year flood.

2. None of these are possible explanations.

3. The river was previously located closer to Ralston and has moved.

4. The flood map is drawn incorrectly.

Part K - Flood insurance and property values

You are buying a home in Ralston, located in Zone B with no previous flooding. The home costs $250,000 and has no basement. How much should you expect your flood insurance rate to be?

Choose from (1, 2, 3, 4)

1. $221/year

2. $773.50/year

3. $552.50/year

4. $441/year

Part L - Using flood zone contours to determine elevation

A flood greater than the 500-year flood travels through Hazard City. Which side of the river would be safest to live on?

Choose from (1, 2, 3, 4)

1. It is impossible to tell.

2. North

3. South

4. Both the north and south will be equally affected.

Part M - New construction and flooding downstream

A new housing development is being built upstream. How might this affect flooding in Hazard City?

Choose from (1, 2, 3, 4)

1. Development can cause more water runoff into a stream and decrease the potential for flooding.

2. It would have no effect.

3. Development can cause more water runoff into a stream and increase the potential for flooding.

4. Development allows water to soak into the ground faster and decreases the potential for flooding downstream.

Choose from (1, 2, 3, 4)

1. Because of the impermeable road surface, both Route 857 and Route 342 would cause floodwaters to be potentially trapped in Hickory Estates, causing flooding.

2. The road would have no effect; flooding is not affected by urbanization.

3. The road could block floodwaters and cause the river to flow south.

4. The bridge across the river could block water flow, causing higher water levels and increasing the potential for flooding.

Insurance Cost Per Year for each $100,000 of property value* $301 Map Property Details Zone 7no one foot or more above base flood elevation Zone A Zone Aat base flood elevation $431 Zone A one foot or morv below base food one foot or more below base flood elevation $1251 Zone B no basement, previous flooding Zone Bbasement, previous flooding Zone B no basement, no previous flooding Zone B basement, no previous flooding Zone C no basement, previous flooding Zone Cbasement, previous flooding Zone C no basement, no previous flooding Zone C basement, no previous flooding Zone V Zone X no basement, previous flooding Zone Xbasement, previous flooding Zone X no basement, no previous flooding Zone X basement, no previous flooding $351 $441 $221 $246 $351 $441 $221 $246 $835 $351 $441 $221 $246 all properties (rates listed in this table are fictitious and do not represent actual insurance costs) insurance costs for a $200,000 home would be 2x the amount shown costs for a $50,000 home would be 0.5x the amount

Explanation / Answer

Part E: Answer 4

Part F:

stream gradient = change in elevation in feet / distance travelled in miles = (841-838) feet / 1 mile = 3 feet / mile. Therefore, Answer 2

Part G: Answer 3 : Walnut Heights

Part H: Answer 4 : 13

Part I: Answer 4

Part J: Answer 1

Part K: Answer 3 (Rate: 221 for a $100,000 home with no basement and no previous flooding, So for $250,000 home, it should $552.50/yr)

Part L: Answer 3: South

Part M: Answer 3

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---