PERMFILE46457

• Permit No: M1992038
• IBM Index Class Name: Permit File
• Doc Date: 9/2/1992
• Doc Name: Permit Application
• From: Sand Creek Farms
• To: MLRD
• Media Type: D
• Archive: No

s

SOIL SURVEY
Colorado. These data arc representative of most of
Adams County.
The average annual temperattlro is near 50° at an
elevation of 5.?00 feet, bt[t this can be expected to vary
a few degrees from the IoAA'cr clcvatimts at the pastern
end of tllc county to tits Iligllcr elevations at rile Arrstcrn
end. The wide average range in dail}' tcmpenturc of
25° to 35° and a wide avenge nave in annual tempera-
ture are typical of the high Plains. As a result of wide
variations fro)n day to day or ovet• n pcI•iod of a few
days, extremely hot weatltcr ilt strainer or extremely
cold weather in o•intcr is generally of short duration anti
is followed by more mo[lcratc temperature.
The average annual growing season in Adams County
is about 150 [lays. Table 10 gives the probability at
Byers, Arapahoe Cottntv, of the l.TSt frcezillg tempera-
tures in spring and the first frcezin~ tempcratums in
fall.
Data for ]one periods in[licatc that the accr:I;e annual
Precipitation in the county ranges from 12.5 to 14.5
inches. It tends to be hi_hcr in the western part. Pnria-
tions Acitltin the county nee related to the local terrain,
elevation, and slope. Particltlnrly in sprin, and summer,
the extreme variabilit_c in the amount of precipitation
frmn vcar to year and betTCCen localities in the same cent
15 50 large that Ct-Cll long-period nvera._es are affected be
chance occurrences and arc riot rasilc interpreted in
terms of actual climatic differences. Probable annual
Precipitation (fi:. 10) is partic\tlarly significant. in show-
vt_ the expectal variation of rainfall from year to year.
1Vhen annual precipitation for 2 years in a row is less
than about 11 inches, most dl•yland crops fail. T\m or
more dry }'rals in a row generally do not occur more
than once et•et1. 10 }'ears. I'igtlres on the normal nrrngc
temperature and precipitation by months and year, along
n'itlt.davs of snow cover, arc liven in table 9.
Total precipitation and snowfall in winter are higher
in the western part of the coltnty than in rite eastern
part. Differences arc sometimes small but consistent. from
October into \Iac. The average anmtnl snowfall is nbont
50 inches at De)iver and is nhont 4B inches at Rerrs. In
summer. howeccr. prccipitatimt lrcne3Ttlly averycs snmr-
what higher in the eastern part of the counts but is
highly variable from tear to year at different localities.
The average relative humidity is 39 percent through
the clay and~62 percent during the night. It is slightly
higher in n'inter than in summer. On the avrn~c, the
sun shines CO percent of rite Possible Itottrs of sunlight
annually.
hailstorms that aI•e damaging to crops occur in some
Parts of the county almost r\•crc Vrat•. Thm•c is nn e:•
tende[1 pattern to the hailstrn•nls. 'Ghee genrt:Tlly omur
hcttcccu \[a}• 15 an[I September 1, anti thr}• arc mari
likely to occur in .June and .Inly. The hail gcucmlly falls
in st[•lps less than 1 mile wide an[I f miles loth. Ii:Iil is
more common in the eastern Part of the county than in
the western PaR
Literature Cited
(1) :\at Lnlcaa .\ssoc[snax of $TATF. limnwaY DFFtCf.\i5.
10GI. ST.AxDARp SCECIFICATION9 FOR II1(:11 \Y.\Y >IATI:RIAI!
.\: D IIETnops of s,A~lrilse axe resnso. ]id. 5,. L,
Illus. tVashingtpn, D.C.
(°) B.\LDIt'I S. )T.\RR. I\ELLOpn, I:If.\IILF.9 1:., ^11(1 TIIORr. .1.\)IEV.
3035. so[L cL\setFlcer[oN. U.S. Dept. .\gr. Yllk.: ais.
1001. llllls.
(3) Snmssos, RoY W.
10G_. sea cL~ssIFTCAnore IN TnE uN3rEp wares. Scl. ]T:
l0y i-1034.
(4) TI[anr, .TA][ES and SnIITn. G(n D.
1G4G. F[IG[IER C.\SECORIE9 oe so[i ct\sstncanore: nnlDa[
svnonpL•tt, area oneAr so[L anocrs. Soil Scl. G7:
117-I'!G.
(v) Ux RF.n $T.\TES DFSARr)IFarT of .\CmCCLTURG
10G1. SOIL SURVEY .VANDAL .\gr. Handbook 1S. ;aq pp„
illus. LSuPplruuxAt. issttnll in ?lac IDc!1
(G)
lOCO. SOIL CNSSIFICATIOR, n CD)ICRF.n F.xSRF. SYETE\I, till
.ArrrtosnlATTOre. °_Gi pp.. illav. (SnPplruu•nls icauvl
in aL•trch 10G7 and September 10CS]
(7) Uatrro ST.\TF.S DErART\It:reT OF DEFF.NSi:
1GGS. UNIFIER SO3L CNSSIFIC.ITION SYETE)f FOIL Rp.\nS. Alr•
F[ELOS. E)IpAN1iME.1T5. ANp FDVxpAT[pNS. )lilt
STD~10B. 30 PP~. illus.
Glossary
AggregR[c, soil. Slnny ftne particles held In a sln;le moss or Master.
:Inc~ral soil aggrre tes such ns crnnllA=. block, or prisms, are
called perk. Clods arc agerrgates prndncrd by tillage or Ipgr.111R.
Alkali soil. Grnemlly, a highlT all:a line soil. SpreitlcanF, nn alkali
soil ^RS so high a degree o[ all:afinib• (pH S..i or bichrrl
nr sn high a percentage of excha nxra hie snlimn fl:. prmrut ..r
more o[ the total exchany^Lble Unsrs ). or ho[lI. that the CmoTL
of Inns[ crop plpnM is low from this caress.
TAnI.s 10.-Probable elates of last frec-ing fcmperatalres in .rpnng anti first in fall
[Based on data from Byers, Arapahoe Countyl
Dates for a gicrn prnnability at a tempcranlre nf-
Pronanility _.
IG° F. nr Inu•cr ?0° F. nr ]racer '_4° r. nr Inavr ?R° F. ..r Imrrr
I :)?O P. nr later

Sprint: _ -~
l year in l0 later than_________________________ April l7------ April ?3_.____ \iav 4-_----- \laY la__.___. \Ltv'!0.
years in 10 later [hmt________________________ Anvil ll____-_ April Lv______ APnI '=S-_-_-- \I:n• i.___---~ \fav "a.
a yearn in l0 later than________________________ \(arch :il_____ Apri17___.__- April l7____.. April ^_i._._._ \[av ll.
• Fall:
l vcar in 10 rarlirr thmr_______________________ Octnbcr'!4-_._ Octnhrr 14--__ Dctnhrr l_____ `;rptrmhrr'=L ~ Frptewl:rr Ll.
2 gran in In rarlirr than_____ ___ _____ _________ Och~hrr'!0____ Octnhrr I!I_.__ Uctnhrr .t,-.._ ~rpb•m Err ;G..~ SrplcaLrr Id.
6 Yrac iu Ill rvlirr IILw______________________ \nsrmimr R.__ Oaubcr ?0____ hero Lrr la.__- UcU~brr f0_.. _~ ti•pmu:hrr .J.