State of Alabama s3

Form HYD-101 Page 1 of 4 March 1990

State of Alabama Department of Transportation Design Bureau Location Information – Field Party

Project No: Date: Division: County: Prepared By: Section: Township: Range: Over (River, Creek, Branch, Ditch): Highway or Road No.: Station No.:

A. Quantity of Flow Note: If drainage area is greater than three (3) square miles, go to Section B of this form. 1. Drainage Area: Acresor Square Miles 2. Rural or Urban Check method to be used: 1. Rational Formula or 2. U.S.G.S. Regression Equations (See “Guidelines for Operation” to determine appropriate method) a. Height Remote Point: Ft. b. Maximum Length: Ft. 3. Method No. 1 Rational a. “C” (weighted if necessary) = 4. Method No. 2 U.S.G.S. Regression Equations a. Hydrologic Area

5. Q = cfs: (1) Q10 = cfs (2) Q50 = cfs (3) Q200 = cfs

B. Description of Stream Channel 1. Natural Stream Bottom Slope: 2. Material in Stream Bottom: 3. Material in Stream Banks: 4. Are Banks Scouring? In Which Direction? 5. Material in Flood Plain: 6. Is Bottom Aggrading (filling)? Degrading (Deepening)? 7. Vegetation in and Along Channel: 8. Vegetation in Flood Plain: 9. Estimated Mannings “N” Value for Channel: 10. Estimated Mannings “N” Value for Flood Plain:

3-15 Form HYD-101 Page 2 of 4 March 1990

11. Presence of Features that Might Affect Discharge, Flood, Tailwater or Headwater Elevations: a. Levees b. Diversions c. Backwater from Another Source d. Other

e. Does stream carry a large amount or accumulation of debris (driftwood, ice, etc.)? f. Estimated allowable non-scouring velocities? g. Downstream drainage structures?

h. Other influences:

C. Existing Structures 1. Is scour indicated near structure?

2. Alignment and General Description of Structure:

3. Size or Waterway Opening of Structure:

4. Elevation of: a. Low Superstructure (Bridge): b. Top of Invert (Culvert or Pipe): 5. Invert Elevations: a. Pipe or Culvert: Inlet Outlet b. (Bridge) Natural Channel: 6. Low Point of Existing Roadway in Vicinity of Structure

7. Road Width, Shoulder-Shoulder or Curb-Curb 8. Skew: 9. Centerline Elevation of Roadway at Centerline of Stream:

10. Condition of Existing Structure:

11. Type and Description of Existing Structure:

D. Property Related Evaluations 1. Opinion of Existing Flood Damage Potential: Low Moderate High

Reason for Opinion:

2. List Buildings in Flood Plain:

3. Floor Elevations:

4. Upstream Land Use:

5. Downstream Land Use:

6. Probable (Anticipated) Changes:

E. Historical Highwater (H.W.) or Flood Information

1. Source of information:

2. Location of Information:

3. Elevation of H.W. or Flood Information:

4. Date of H.W., Flood, or Floods (if it can be determined):

(Please record more than one source if information can be obtained.) 5. Estimated Allowable H.W.: 6. Damage from Previous Floods (if available):

F. Photographs

1. Existing Structures of Proposed Structure: (Please check one) Inlet Outlet Other 2. Channel and Flood Plain Inlet Outlet Other 3. Other Photos

(Describe)

G. Valley Cross Section or Print Out The submittal normally includes a right angle valley section. This section is taken downstream from the crossing. Enough ground shots are taken to outline the valley to an elevation well above extreme highwater. Care is taken to outline the main channel. Each shot is identified as (FP) flood plain, (TB) top of bank, (ES) edge of stream, etc. Also, the natural stream bottom slope is determined and recorded.

Remarks:

Distance Elevation Remarks Distance Elevation Remarks Distance Elevation Remarks

Other Remarks: