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Memo re bluff review
. � Christine Mattson �� From: Mike Gaffron Sent: Monday, September 23, 2013 10:13 AM To: 'Peter W. Johnson' Cc: Melanie Curtis; Christine Mattson Subject: Bluff Review for Morries Attachments: Morries 1420 BPRd and 3165 NShDr Bluff Review.pdf Peter— See attached sketch. I looked at three different transects on the two properties. First established the toe of bluff per definition;then established the top of bluff per definition; then calculated slope (rise over run) for a)the entire distance from toe to top; and b) the distance from toe to 955' (which is approximately the point 25' above the OHWL). In no case did the calculated slope get to more than 25%. We do not consider short segments of>30%slope as defining a bluff—it has to be based on the average of toe to top and/or toe to the 955 contour. Unless the topo you are working from is significantly different from that in our GIS system, it appears you do not have a bluff to deal with. Mike Michael P.Gaffron Assistant City Administrator/Long Term Strategy City of Orono (Street Address)2750 Kelley Parkway (Mailing Address)P.O. Box 66,Crystal Bay,MN 55323 Phone:(952)249-4600 Fax: (952)249-4616 1 � � �`- �� 'a - i \ Se, ,.•� ''� t s � '" ,. � � � ti ... .� . ,9� � ! _ � �� �' `` � �. � � � .� "� - .... � ` ~� ... � "� ;� •.. �, � �. .�� �. .� �,., ,_ .- �. �. _ � _ ..� � ., � � � �` _B DHNS-PO/NT RD . � �W " � ��� P !.l J� \ � �s`' � � � W � �� �„ ~I ,'' Y � � �, H.a. <,... -».m ,� � � �4 � � �' ",�, ..�. �-., Y �� . ..^...*�" � e,,,, 'ti ."._ � . . i` s' .�+^ . �t' . N '� . . .. t' . � � �. 3 ./` � "" - .. . . . � � . . � �. . . .. . . ' d � t✓ ^�y � � � . . . . . �5 . � � ' . � . . � . f � ' y0 � . . � ..� .. . . . .. � . . f �, ' 97� `` �. ' , ��. � �,,. � � � � Y � � � �O � ,,, � O ` `� � ! _ � � ; � y . ��� „�. ,� � ... �.. �.. �,. � � r ,� � w - � � � � � � � �� `� � t ' . �" ` .�, ._ �: '�, �' -"� °� �,, � ; � � ` � " � � �. ,... .� ,. ,,� -.� -- ,,. � �� s',,, a,, .... ..._ .,. � -�- �.., ..,� ,�_ „�. """ r ..r -�, ,.., ,.. ti � ' � ,,.. --- w-, w .r �„ ,� `.. ,�" "'.- .,� � � � �. ,.._ ..... ,... ..- "' "'',✓ �„ �"_' �� ".�' -'d ... ,_,„ .� .� ,, '-� ,ry �, t , �.. �.. �. .� �.-d, ,, 9 �.. � � � v,. . .. � , � � � � –W ,.._ o. v. �,..o w... .w..� � � v,, � � � .�. ,� � 6D ~w ,,' "°' �., � ., �„ �,. '^,. e.. � ..m .... �,- "" � .." ,r ,� '^. `"� '' _ �_. ��,�,,, .... <;. ...� .." .�- .i °'" ...,^� �.. �. �,.- �" ��"` "" � ",., -... .,.-. _... ^... '".� ""` �, '"'. „"'� 'r "` ^. �" '0.�4 � . ,r' r" "'" ...,' " "" �� ...a. � � _ � ."' '"' ✓ ^"'�� .✓' ` � � �"� � � j �� � O�� mn ,,.,, ..� ,,,,, � � � ✓ ...„, � «a' �,^" ` �,� � �`"'E���„a ..._ ...- -�^ "1..Y'. ;,�� . . �r� '""' � s.. "'W .r° � "`� , � w `r,. ��"'-� � �r .�� -- ..�- ...' "., � ..... ��.r�L.�. � "' �. `� - . �'^� t�,r� � Y ....� ."'� ,,,• � � f �,'' � "` � .` w„�; . .... _.� .,.. ..�.. ""` �,. �C'�� �� . . ��--°� ,,.,' l'; w . ,� � � � � � +� � � . � r� � � .•^' r°' r t ` _.. '"` '� `,- ,.. p,,, . � . � ,+,. " f 'e: � ''� ./ � ` � ,s - � ,� �"' �`� -^' "'" -- � ,, '�' "T}'_^.`4.: � ��; .,.. �a` � . �'� . � !. .,.. 1`' �, .,�, . . `� ,A 1 , . •- ,, f, f ,� `. , � _._ ..� ..'� �(_ � � ,o d \ `• a ,x. .., �v f ..-^ ,w .. �., ` �- _.• • . .: J'� r"' ..� �, O J � +e�, s' "� "' yd A '� +' � '�. �is��....�� � ,.f `� ._.. '"r r `" 4 `� � . . y ' 'w ✓ "'",r 'f r` ✓ ✓ �... � , � ! � ..,. � � �,,, �. f, �� . o•' d ,°' � 4^�, l �e. . r' � ".w p, '' ..... .-.. -... `.. 'w y/' '"" --„ � �i'���`' D �„ ..- '"' ✓ " .''� ,.�. �-- --.� . �. • ~` y . . � .� �. �,.. � ..... 1 Y � � i . ..,.- /: y .,,,. ,,... �•-- ..,. ..._ ...,. .w ✓` � � .. f� '".. �,' �,+ „„„ � � � �.., _, ,... '"� !" � t � � `"' --� ..� .� ,�.. �, `` �, ,�., ... ».. ... .�. .,.. ..., �1� w., — ,,� � � � � � -` .�, .�, „�. ,� ,a `� �„ ;� y � ,.� �.. «� �-.. 93� -.. __ � _ � _ � . .. �`. � F "".,.-`. � � , _ � .�.. � � � a � _� f � � � � � �,, s` . f� � � � '4, �- � � +� � � . . . � �� - .�� � . � . � � � x' . . � _ . -"" "° „� ..,.. i -� �,� . . � � . . � �� � - �` � � . � � . . . t, t ,� +� . . . i4 � t � �i �` � � j' ����. . 1 �., . � - ..,, \ k' ��,, Y% � 4 � , ��O � �� � { � y � � �;P��a2� � rw . 8 a o,`-d�� ; � �. G�;;.;t Q i.j - � . �aa`��� 3 � � ��. � m � `� � � I � Q .. . 07 O 3 . � �g p Q;i. � . . . � � N m C o ; � o "y . . ;c�&a,ai �, y 3 n � � ��a $�^�a�� . � � . � . � � . . . .. � � . a r'�.� � � �.. N o �� �. �'o �'� _ . , .. . . . . (/� p m p � .. . _��_•� w Fc � �a°a3:�g : �r r �z_'�;�, S SeoS.M R � . . . . . . . 6 j � . '�. � . . . .