WetlandBuilder (TM) Version 3.7.6 Report for Conservation Planner Prepared by: Joe Preparer phone: 333-333-4567 Date Created: November 04, 2014 Location: Sac County, Iowa Twnshp-Rng-Sec: 88N-35W-33 Landowner: Jeff Landowner phone: 333-333-3321 Aerial View of Wetland With Structure Information and Estimated Cost Principal spillway type: Vegetative spillway Pool surface area: 6.1 ac Pool depth 18 inches or less: 32 % Maximum pool depth: 5.0 ft Volume of permanent pool: 16.7 ac-ft Berm width: 12 ft
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WetlandBuilder (TM) Version 3.7.6Report for Conservation Planner
Prepared by: JoePreparer phone: 333-333-4567Date Created: November 04, 2014Location: Sac County, IowaTwnshp-Rng-Sec: 88N-35W-33Landowner: JeffLandowner phone: 333-333-3321
Aerial View of Wetland With Structure
Information and Estimated CostPrincipal spillway type: Vegetative spillwayPool surface area: 6.1 acPool depth 18 inches or less: 32 %Maximum pool depth: 5.0 ftVolume of permanent pool: 16.7 ac-ftBerm width: 12 ft
Item Quantity Unit Unit cost Subtotal
Constructed fill (including any berms,secondary dikes, and core trenchfill): 6,495 cu yd $1.89 $12,275.00Core trench excavation 1,167 cubic yards $2.11 $2,463.00Grubbing: 0.0 ac $1,154.36 $0.00Seeding: ac $0.00Central Mesic 5.0 ac $607.00
Fencing: 2,000 ft $2.46 $4,920.00Tile investigations: 1 investigations $200.00 $200.000 inch diameter trickle tube: 0 ft $0.00 $0.00Tile breaks: 20 feet $1.50 $30.00Intake removal: 1 removal(s) $350.00 $350.00
Total: $23,273.00
Wetland Cross Section
Planning Details
Principal spillway type: Vegetative spillwayDrainage area: 24 acDrainage to pool area ratio: 4 : 1 ratioTop of settled fill elevation: 1,237.3 ftElevation of lowest point in centerline of primary dike: 1,231.3 ftCrest elevation: 1,236.3 ftVolume of permanent pool: 16.7 ac-ftVolume of total storage to top of settled fill: 23.4 ac-ftRunoff curve number: 79Average watershed slope: 3.8%Maximum flow length: 1,264 ftContinuous base flow: noBuilding material: mineralStorm event for principal spillway 25 year/24 hour
Primary dike
Top of settled fill elevation: 1,237.3 ftConstructed fill height: 6.3 ftConstructed fill including berm (if any): 6,495 cu ydAmount added for settlement: 5%Effective fill height: 5.0 ftBerm width: 12 ftPrimary dike top width: 10 ftPrimary dike front slope ratio: 3 : 1Primary dike back slope ratio: 3 : 1Trickle tube: noSettled fill height: 6.0 ftFreeboard height 0 ftVegetative spillway depth 1 ftCore trench depth 3 ftCore trench side slope 1:1Core trench bottom width 10 ft
Primary Dike Earthwork DimensionsSquare Yardage reflects earth quantity before settling.
Ap = cross-sectional area of pipe (sq. ft.) = π · (PS/122 )2
Ap = π · (0/122 )2 = 0.8
g = acceleration of gravity (ft per sec per sec) = 32.2
Qpipe = Ap
√√√√ 2·g·hp1+Ke+Km+KpLp
Qpipe = 0.8√
2·32.2·6.31+1+0+0.019·65.8
Qpipe = 8.82
2b. Find the storage volume Vs (acre-feet):
Coe�cients (lookup):
C0 = 0.682
C1 = -1.43
C2 = 1.64
C3 = -0.804
Equation:
Vs = Vr(C0 + C1(Qpipe
qp) + C2(
Qpipe
qp)2 + C3(
Qpipe
qp)3
Vs = 5.96(0.682+ (−1.43)(0.124)+ (1.64)(0.124)2+(−0.804)(0.124)3
Vs = 3.15
2c. Find the auxillary storage volume Vaux (acre-feet):
Vaux = Vs
Vaux = 3.15
2d. Fill the basin model to the pond depth D, and �ll with additionalvolume Vaux:
The new dam height H (feet) is two feet above the top of the Vaux
H = 7.3
2e. See if H has converged to a value.
If the new value of H is not within 0.005 feet of the value of H we
used in step 4a above, repeat steps 4a through 4e with this new value
of H .
If the new value of H is within 0.005 feet of the value of H we used in
step 4a, then we consider the value to have converged, and move on to
step 4f.
2f. Accept the converged value of the dam height H (feet):
H = 6Use this value to construct the pond in the GIS.
Disclaimer Statements Estimate: This estimate is for planning purposes only. In no way shall it be construed as an engineering design. This estimate is valid only for low hazard dikes. Planning for moderate and high hazard dikes or dams requires an onsite investigation as well as additional evaluation of the hydrology and hydraulics by a licensed engineer. Cost: This is a preliminary cost estimate for planning purposes only. The final construction cost may vary depending on actual site conditions, timing of construction, availability of fill materials, inflation, competitive bid process, construction method, etc. Water Level: There is no guarantee that a pothole or structure will fill and/or remain filled to the crest elevation of the pothole, ditch plug, or principal spillway crest elevation. Agren Disclaimer: The content and products associated with “WetlandBuilder” are provided to you on an “as-is” and “as available” basis. Agren, Inc. makes no representations or warranties of any kind, express or implied, as to the operation of “WetlandBuilder” or the information, estimates, content, materials, products or services included on or associated with “WetlandBuilder”. You expressly agree that your use of “WetlandBuilder” and all products and services included on or associated with “WetlandBuilder” are at your sole risk. Agren, Inc. does not make any representations, warranties or guarantees, express or implied, regarding the accuracy, correctness, or completeness of the content of “WetlandBuilder”, nor the safety, reliability, title, timeliness, completeness, merchantability, conformity, or fitness for a particular purpose of the content of “WetlandBuilder”. It is your sole responsibility to independently evaluate the accuracy, correctness, or completeness of the content of “WetlandBuilder”. Agren, Inc. makes no representation, warranty, or guarantee that the content is free of infection from any viruses, worms, or other code or computer programming routines that are intended to damage or detrimentally interfere with any system data. This report may contain personally identifiable information (PII). In order to protect this PII, the local NRCS and/or District field officer will ensure that the required security / privacy measures are in place in accordance with security / privacy Federal laws and regulations. Limitations The WetlandBuilder software is for planning Class III dikes only. Class III dikes are located on sites where damage likely to occur from failure will be minimal. If you need to plan a Class I or Class II dike, contact an engineer.
